2001 Memphis, Tennessee (MEM)

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2001 MEMPHIS, TENNESSEE (MEM)

Topography varies from the level alluvial area in east–central Arkansas to the slightly rolling area in northwestern Mississippi and southwestern Tennessee.

Agricultural interests are varied, with major crops being cotton, corn, hay, soybeans, peaches, apples, and a considerable number of vegetables. The climate is quite favorable for dairy interests, and for the raising of cattle and hogs.

The growing season is about 230 days in length. The average date for the last occurrence of temperatures as low as 32 degrees is late March. The average date of the first temperature of 32 degrees or below is early November.

Precipitation of nearly 50 inches per year is fairly well distributed. Crops and pastures receive, on the average, an adequate supply of moisture during the growing season, with lesser amounts during the fall harvesting period.

Sunshine averages slightly over 70 percent of the possible amount during the growing season. Relative humidity averages about 70 percent for the year.

Memphis, although not in the normal paths of storms coming from the Gulf or from western Canada, is affected by both, and thereby has comparatively frequent changes in weather. Extremely high or low temperatures, however, are relatively rare.

NORMALS, MEANS, AND EXTREMES

MEMPHIS, TN (MEM)

LATITUDE:    LONGITUDE:    ELEVATION (FT):    TIME ZONE:    WBAN: 13893

35 03′ 40″ N  89 59′ 06″ W  GRND: 283  BARO: 286  CENTRAL (UTC + 6)

ELEMENTPORJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECYEAR
TEMPERATURE FNORMAL DAILY MAXIMUM3048.553.563.273.381.089.392.390.883.974.362.352.572.1
MEAN DAILY MAXIMUM5449.053.962.172.880.988.691.690.584.574.661.752.271.9
HIGHEST DAILY MAXIMUM607881859499104108107103958681108
YEAR OF OCCURRENCE197219621986198719771954198020001954195420001982JUL 1980
MEAN OF EXTREME MAXS.5470.373.579.685.790.896.298.197.594.287.579.071.185.3
NORMAL DAILY MINIMUM3030.934.843.052.461.268.972.971.164.551.942.734.852.4
MEAN DAILY MINIMUM5431.635.342.652.361.469.373.071.364.152.242.034.752.5
LOWEST DAILY MINIMUM6041112293848524836259-13-13
YEAR OF OCCURRENCE198519511943198719441966194719461949195219501963DEC 1963
MEAN OF EXTREME MINS.5413.417.926.135.747.657.664.262.049.236.525.117.137.7
NORMAL DRY BULB3039.744.253.162.971.279.182.681.074.263.152.543.762.3
MEAN DRY BULB5440.344.752.462.671.378.982.380.874.263.451.843.462.2
MEAN WET BULB1736.941.446.954.963.970.970.168.966.453.444.939.854.9
MEAN DEW POINT1731.535.440.248.559.166.970.669.162.148.339.634.350.5
NORMAL NO. DAYS WITH:
MAXIMUM 90300.00.00.00.23.213.620.917.47.30.60.00.063.2
MAXIMUM 32303.81.40.10.00.00.00.00.00.00.00.11.77.1
MINIMUM 323019.113.44.80.40.00.00.00.00.00.14.214.256.2
MINIMUM 0300.20.00.00.00.00.00.00.00.00.00.00.20.4
H/CNORMAL HEATING DEG. DAYS3078458238312725000101313806603082
NORMAL COOLING DEG. DAYS3000146421742354649628672002118
RHNORMAL (PERCENT)3068666362666769707166686967
HOUR 00 LST3073716869747577788075737274
HOUR 06 LST3076767577818284858682797780
HOUR 12 LST3061585553565658585852576157
HOUR 18 LST3063605553565658596258626559
SPERCENT POSSIBLE SUNSHINE3550545664697474756970585064
W/OMEAN NO. DAYS WITH:
HEAVY FOG(VISBY 1/4 MI)511.91.40.70.30.20.20.30.30.61.01.21.89.9
THUNDERSTORMS512.02.44.56.37.07.48.36.03.42.22.51.653.6
CLOUDINESSMEAN:
SUNRISE-SUNSET (OKTAS)455.45.15.24.84.74.34.23.83.93.64.55.04.5
MIDNIGHT-MIDNIGHT (OKTAS)294.94.64.94.34.33.93.63.43.63.34.24.74.1
MEAN NO. DAYS WITH:
CLEAR437.77.97.98.68.49.610.211.812.514.410.28.9118.1
PARTLY CLOUDY435.85.66.57.39.611.111.911.77.57.06.25.695.8
CLOUDY4317.514.816.614.113.09.38.97.410.09.713.616.5151.4
PRMEAN STATION PRESSURE(IN)2629.8629.8229.7229.7029.7029.6829.7129.7229.7529.7929.8129.8929.76
MEAN SEA-LEVEL PRES. (IN)1730.1630.1130.0529.9929.9730.0130.0130.0230.0430.1030.1230.1630.06
WINDSMEAN SPEED (MPH)5210.010.110.710.28.87.97.56.97.57.79.09.68.8
PREVAIL. DIR (TENS OF DEGS)2718191820182121210315181818
MAXIMUM 2-MINUTE:
SPEED (MPH)231373235373936313135333139
DIR. (TENS OF DEGS)29182830243306063631173133
YEAR OF OCCURRENCE200120012001200120012000200120002000200120012000JUN 2000
MAXIMUM 5-SECOND:
SPEED (MPH)237444548484646393840453948
DIR. (TENS OF DEGS)21182730253303033431193125
YEAR OF OCCURRENCE200120012001200120012000200120002000200120012000MAY 2001
PRECIPITATIONNORMAL (IN)303.734.355.415.464.983.573.793.433.533.015.105.7452.10
MAXIMUM MONTHLY (IN)5112.2110.5112.0817.1311.5810.179.969.657.617.7511.6013.8117.13
YEAR OF OCCURRENCE195119891975199119531996199819781958198420011982APR 1991
MINIMUM MONTHLY (IN)510.571.121.501.390.830.040.430.430.19T0.751.05T
YEAR OF OCCURRENCE198619801966199219771953195419531953196319651955OCT 1963
MAXIMUM IN 24 HOURS (IN)513.894.245.954.354.944.764.714.044.633.717.305.427.30
YEAR OF OCCURRENCE197419891975198519581980198019781957200120011978NOV 2001
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01309.89.510.610.19.68.58.57.77.76.59.09.7107.2
PRECIPITATION 1.00300.91.31.81.91.51.01.31.01.21.01.51.916.3
SNOWFALLNORMAL (IN)302.61.40.9T0.00.00.00.00.00.00.10.75.7
MAXIMUM MONTHLY (IN)4912.48.317.3TTT0.00.00.0T1.514.317.3
YEAR OF OCCURRENCE198519851968199319951995199319761963MAR 1968
MAXIMUM IN 24 HOURS (IN)498.15.816.1TTT0.00.00.0T1.214.316.1
YEAR OF OCCURRENCE198519601968199319951995199319761963MAR 1968
MAXIMUM SNOW DEPTH (IN)5112612000000011313
YEAR OF OCCURRENCE19481985196819911963DEC 1963
NORMAL NO. DAYS WITH:
SNOWFALL 1.0300.90.50.30.00.00.00.00.00.00.00.*0.11.0
PRECIPITATION (inches) 2001 MEMPHIS, TN (MEM)
YEARJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANNUAL
19724.732.234.803.514.555.504.891.945.463.928.059.3758.95
19734.623.627.639.446.231.004.494.885.063.378.495.3564.18
19748.904.653.406.347.766.306.334.783.452.674.965.0364.57
19754.655.5312.084.988.722.422.262.032.622.697.772.9358.68
19762.854.417.682.414.734.063.820.865.405.661.831.7945.50
19772.571.994.135.420.833.383.411.626.432.026.013.3941.20
19788.131.314.052.148.144.453.899.651.521.825.5613.1263.78
19795.985.666.6011.477.784.933.125.924.492.607.424.9270.89
19803.231.1210.867.534.435.754.731.235.323.145.231.8654.43
19811.383.664.983.677.062.931.714.210.615.832.121.8440.00
19826.614.164.476.765.506.684.133.111.925.236.4313.8168.81
19832.322.613.668.849.583.503.830.611.522.949.568.6857.65
19841.884.376.075.249.061.124.595.001.967.755.854.3557.24
19853.784.104.966.512.234.553.503.504.033.363.873.2747.66
19860.572.501.903.724.633.801.212.741.213.758.673.9238.62
19871.765.813.383.782.963.662.064.122.011.9610.4511.3953.34
19884.253.494.202.852.382.155.210.854.733.6210.525.9950.24
19897.9110.515.502.132.367.207.551.436.082.373.652.2058.89
19903.978.995.656.934.552.682.211.185.214.373.4410.6159.79
19912.906.463.6817.135.101.421.922.061.474.395.547.0459.11
19921.782.187.071.393.687.505.382.443.624.014.823.2847.15
19933.592.463.146.204.564.200.863.693.731.914.075.5944.00
19945.534.676.654.043.005.034.032.001.442.724.346.0449.49
19957.072.123.354.385.906.668.423.630.391.577.625.7956.90
19965.532.775.313.376.2810.179.892.075.997.1211.516.1876.19
19974.377.6311.288.918.006.754.354.016.314.061.694.5271.88
19986.735.555.148.241.711.099.962.541.702.342.564.2551.81
19996.152.106.598.924.792.423.631.181.111.532.374.7345.52
20001.375.374.424.414.023.792.230.771.080.456.892.4737.27
20013.326.893.543.946.352.125.532.253.356.9311.6010.1966.01
POR=130 YRS4.844.395.255.214.423.773.533.162.932.864.494.8549.70
AVERAGE TEMPERATURE (F) 2001 MEMPHIS, TN (MEM)
YEARJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANNUAL
197242.344.752.263.169.777.579.479.775.961.445.540.061.0
197338.640.557.359.868.381.083.279.676.167.657.343.362.7
197445.745.658.761.872.174.782.579.268.562.453.345.262.5
197545.946.249.961.973.578.881.181.270.965.853.844.162.8
197639.553.858.563.665.676.481.578.973.058.945.541.961.4
197730.745.158.666.976.481.984.782.679.062.255.144.163.9
197832.735.050.366.370.979.883.880.977.762.557.744.061.8
197930.938.554.363.070.077.982.680.973.465.850.745.461.1
198043.239.549.460.972.580.988.887.280.562.753.345.963.7
198140.947.354.370.270.082.584.681.874.062.553.840.963.6
198236.640.555.558.574.578.085.082.973.363.753.449.562.6
198340.445.351.956.868.277.283.684.975.266.253.134.761.5
198435.947.651.161.069.580.980.979.871.968.450.953.862.6
198532.440.657.765.071.878.982.280.273.667.257.636.962.0
198641.948.055.264.472.581.086.579.279.164.251.142.663.8
198739.647.154.762.276.580.082.583.675.359.254.446.763.5
198836.842.252.362.871.880.381.683.776.359.154.644.962.2
198947.340.053.862.669.577.680.781.272.464.254.233.661.4
199048.552.055.361.468.380.782.582.077.961.357.145.864.4
199141.248.055.465.074.680.383.380.975.365.549.246.863.8
199242.249.953.763.070.476.982.576.873.263.850.743.862.2
199342.742.651.159.369.979.286.483.673.562.250.244.862.1
199437.846.354.267.069.482.381.179.472.563.656.646.763.1
199542.244.256.262.971.177.081.184.573.065.248.343.262.4
199639.245.048.059.774.278.480.579.672.363.149.146.861.3
199739.747.656.757.967.975.782.579.374.762.648.542.361.3
199845.848.551.961.475.383.284.181.880.566.655.945.165.0
199946.051.450.967.071.279.783.782.775.264.357.045.864.6
200042.850.256.460.673.978.683.486.376.768.150.232.763.3
200138.047.749.367.772.177.783.281.873.661.757.348.263.2
POR=127 YRS40.944.352.562.270.678.481.580.374.363.551.843.562.0

REFERENCE NOTES:

PAGE 1:

THE TEMPERATURE GRAPH SHOWS NORMAL MAXIMUM AND NORMAL MINIMUM DAILY TEMPERATURES (SOLID CURVES) AND THE ACTUAL DAILY HIGH AND LOW TEMPERATURES (VERTICAL BARS).

PAGE 2 AND 3:

H/C INDICATES HEATING AND COOLING DEGREE DAYS.

RH INDICATES RELATIVE HUMIDITY

W/O INDICATES WEATHER AND OBSTRUCTIONS

S INDICATES SUNSHINE.

PR INDICATES PRESSURE.

CLOUDINESS ON PAGE 3 IS THE SUM OF THE CEILOMETER AND SATELLITE DATA NOT TO EXCEED EIGHT EIGHTHS (OKTAS).

GENERAL:

T INDICATES TRACE PRECIPITATION, AN AMOUNT GREATER THAN ZERO BUT LESS THAN THE LOWEST REPORTABLE VALUE.

+ INDICATES THE VALUE ALSO OCCURS ON EARLIER DATES.

BLANK ENTRIES DENOTE MISSING OR UNREPORTED DATA.

NORMALS ARE 30–YEAR AVERAGES (1961–1990).

ASOS INDICATES AUTOMATED SURFACE OBSERVING SYSTEM.

PM INDICATES THE LAST DAY OF THE PREVIOUS MONTH.

POR (PERIOD OF RECORD) BEGINS WITH THE JANUARY DATA MONTH AND IS THE NUMBER OF YEARS USED TO COMPUTE THE MEAN. INDIVIDUAL MONTHS WITHIN THE POR MAY BE MISSING.

WHEN THE POR FOR A NORMAL IS LESS THAN 30 YEARS, THE NORMAL IS PROVISIONAL AND IS BASED ON THE NUMBER OF YEARS INDICATED.

0.* OR * INDICATES THE VALUE OR MEAN–DAYS–WITH IS BETWEEN 0.00 AND 0.05.

CLOUDINESS FOR ASOS STATIONS DIFFERS FROM THE NON–ASOS OBSERVATION TAKEN BY A HUMAN OBSERVER. ASOS STATION CLOUDINESS IS BASED ON TIME–AVERAGED CEILOMETER DATA FOR CLOUDS AT OR BELOW 12,000 FEET AND ON SATELLITE DATA FOR CLOUDS ABOVE 12,000 FEET.

THE NUMBER OF DAYS WITH CLEAR, PARTLY CLOUDY, AND CLOUDY CONDITIONS FOR ASOS STATIONS IS THE SUM OF THE CEILOMETER AND SATELLITE DATA FOR THE SUNRISE TO SUNSET PERIOD.

GENERAL CONTINUED:

CLEAR INDICATES 0–2 OKTAS, PARTLY CLOUDY INDICATES 3–6 OKTAS, AND CLOUDY INDICATES 7 OR 8 OKTAS. WHEN AT LEAST ONE OF THE ELEMENTS (CEILOMETER OR SATELLITE) IS MISSING, THE DAILY CLOUDINESS IS NOT COMPUTED.

WIND DIRECTION IS RECORDED IN TENS OF DEGREES (2 DIGITS) CLOCKWISE FROM TRUE NORTH. "00" INDICATES CALM. "36" INDICATES TRUE NORTH.

RESULTANT WIND IS THE VECTOR AVERAGE OF THE SPEED AND DIRECTION.

AVERAGE TEMPERATURE IS THE SUM OF THE MEAN DAILY MAXIMUM AND MINIMUM TEMPERATURE DIVIDED BY 2.

SNOWFALL DATA COMPRISE ALL FORMS OF FROZEN PRECIPITATION, INCLUDING HAIL.

A HEATING (COOLING) DEGREE DAY IS THE DIFFERENCE BETWEEN THE AVERAGE DAILY TEMPERATURE AND 65 F.

DRY BULB IS THE TEMPERATURE OF THE AMBIENT AIR.

DEW POINT IS THE TEMPERATURE TO WHICH THE AIR MUST BE COOLED TO ACHIEVE 100 PERCENT RELATIVE HUMIDITY.

WET BULB IS THE TEMPERATURE THE AIR WOULD HAVE IF THE MOISTURE CONTENT WAS INCREASED TO 100 PERCENT RELATIVE HUMIDITY.

ON JULY 1, 1996, THE NATIONAL WEATHER SERVICE BEGAN USING THE "METAR" OBSERVATION CODE THAT WAS ALREADY EMPLOYED BY MOST OTHER NATIONS OF THE WORLD. THE MOST NOTICEABLE DIFFERENCE IN THIS ANNUAL PUBLICATION WILL BE THE CHANGE IN UNITS FROM TENTHS TO EIGHTS (OKTAS) FOR REPORTING THE AMOUNT OF SKY COVER.

HEATING DEGREE DAYS (base 65 F) 2001 MEMPHIS, TN (MEM)
YEARJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNTOTAL
1972-7300121725837668096792372003203490
1973-7400867244665599535235150102504
1974-750028121367607591521463180202880
1975-760040903526437833262381005802630
1976-77000231581708105654721261403400
1977-78000123313640995835454744703481
1978-7900011623064310497343451212303261
1979-8000076426598669733478156703143
1980-81005146362586739492342182302713
1981-82009153331739873680324215203326
1982-8300201343525007595434062732503012
1983-840027733689358944994261622403408
1984-850037484233671004683254100602922
1985-86001754257864708475307102802792
1986-87000102413687782492322154002952
1987-88000186324559867657393108003094
1988-890012023146195446943691744102958
1989-9000241023379665033633211813802835
1990-91001118224959372847132957702627
1991-920023904815566994333471443002803
1992-930015874286506856174332001523132
1993-940014164447618839524337783803059
1994-9500161172615597035742921233202677
1995-96001879495666792577525190903351
1996-9700121154755617764792672143602935
1997-98000181490696587457439133402987
1998-990005827562258638143268002422
1999-00006112241591679430269150002478
2000-0100118145599682947947972503407
2001-0020150235513
COOLING DEGREE DAYS (base 65 F) 2001 MEMPHIS, TN (MEM)
YEARJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNTOTAL
19720039517938344946434666601991
1973004481434865714583501561902235
1974604659228299550445138462301840
1975803932724215075102241212322184
19760744648434951943824748001800
19770023123362516619551426412002681
1978006122235452590501387461802357
1979001968184394553499259108402088
198000040249480744695476801822784
1981052018118453261452728580202430
198201362630539962356327510014252367
1983007321313735846223381161702220
1984014511694825024622491625232110
198506301072244255404782851294202266
198603129124748767344842781402473
198700978366458549584315121302384
19880075222146951858634724802232
19890227109186386496510254842002074
1990072783146477550534404711822319
19910034623094645765003391131302410
19920059220436355137526855401917
199300838173436669584275841302280
1994078145179525502451247801502159
199540266622936550761226491212167
19960654030240848645823762432011
199711147132327550446297114001889
19980039333305505985284711149132685
1999560136199447587555319991012364
20000712242844165796673711841802562
200102015923238756952628556822226
SNOWFALL (inches) 2001 MEMPHIS, TN (MEM)
YEARJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNTOTAL
1972-730.00.00.00.0TT1.4T0.00.00.00.01.4
1973-740.00.00.00.00.00.20.90.5T0.00.00.01.6
1974-750.00.00.00.0T0.23.90.51.40.00.00.06.0
1975-760.00.00.00.00.00.10.3T0.00.00.00.00.4
1976-770.00.00.00.01.50.33.5T0.00.00.00.05.3
1977-780.00.00.00.00.0T4.33.2T0.00.00.07.5
1978-790.00.00.00.00.0T3.07.40.00.00.00.010.4
1979-800.00.00.00.0T0.01.31.50.80.00.00.03.6
1980-810.00.00.00.0TTTT0.00.00.00.0T
1981-820.00.00.00.00.0T4.50.71.20.00.00.06.4
1982-830.00.00.00.00.0T7.3T0.20.00.00.07.5
1983-840.00.00.00.00.00.82.0T0.50.00.00.03.3
1984-850.00.00.00.00.0T12.48.30.00.00.00.020.7
1985-860.00.00.00.00.0TT2.00.00.00.00.02.0
1986-870.00.00.00.00.0TT0.40.00.00.0
1987-880.00.00.00.00.0T8.23.0T0.00.00.011.2
1988-890.00.00.00.00.0TT0.3T0.0T0.00.3
1989-900.00.00.0TT0.40.00.00.0T0.00.00.4
1990-910.00.00.00.00.00.4TT1.00.00.00.01.4
1991-920.00.00.00.00.60.0T0.0T0.00.00.00.6
1992-930.00.00.00.0TTTTTTT0.0T
1993-940.00.00.0T0.00.00.72.4T0.00.00.03.1
1994-950.00.00.00.00.00.00.52.50.70.0TT3.7
1995-960.00.00.00.0TT0.40.2T0.00.00.00.6
1996-970.00.00.00.00.0T3.80.70.00.0T0.04.5
1997-980.00.00.00.00.0T3.00.0T0.00.00.03.0
1998-990.00.00.00.00.00.8TTT0.0
1999-00
2000-01
2001-
POR=47 YRS0.00.00.0T0.10.62.21.40.8TTT5.1

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