Mclean, Virginia, United States Climate

Weather: 21.02°C/69.84°F, Wind SW at 3.09 km/h, 83% Humidity, 0% Chance of rain

United States
(Photo by Matthew Payne on Unsplash)
Contents

McLean Climate Summary

Located at an elevation of 86.27 meters (283.04 feet) above sea level, McLean has a Humid subtropical, no dry season climate (Classification: Cfa). The district’s yearly temperature is 15.39ºC (59.7ºF) and it is 2.75% higher than United States’s averages. McLean typically receives about 65.11 millimeters (2.56 inches) of precipitation and has 128.55 rainy days (35.22% of the time) annually.

CountryUnited States
CityVirginia
Longitude-77.1772604
Latitude38.9338676
Attitude/Elevation86.27m (283.04ft)
Local timeMonday 17:55
Annual high temperature18.74ºC (65.73ºF)
Annual low temperature9.95ºC (49.91ºF)
Average annual precip.65.11mm (2.56in)
Warmest monthJuly (32.04ºC / 89.67ºF)
Coldest MonthJanuary (-2.2ºC / 28.04ºF)
Wettest MonthAugust (93.51mm / 3.68in)
Driest MonthNovember (37.59mm / 1.48in)
Number of days with rainfall (≥ 1.0 mm)128.55 days (35.22%)
Days with no rain236.45 days (64.78%)
Humidity71.82%

Climate McLean: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)19.0(66.2)25.0(77.0)28.0(82.4)32.0(89.6)39.0(102.2)40.0(104.0)41.0(105.8)38.0(100.4)38.0(100.4)34.0(93.2)26.0(78.8)22.0(71.6)41.0(105.8)
Average high °C (°F)4.52(40.14)6.92(44.46)11.64(52.95)18.43(65.17)24.19(75.54)28.91(84.04)32.04(89.67)30.61(87.1)26.96(80.53)20.19(68.34)12.67(54.81)7.84(46.11)18.74(65.73)
Daily mean °C (°F)1.82(35.28)3.77(38.79)8.14(46.65)14.75(58.55)20.64(69.15)25.48(77.86)28.51(83.32)26.88(80.38)23.22(73.8)16.69(62.04)9.48(49.06)5.26(41.47)15.39(59.7)
Average low °C (°F)-2.2(28.04)-0.83(30.51)3.06(37.51)8.62(47.52)14.25(57.65)18.58(65.44)21.65(70.97)20.72(69.3)17.57(63.63)11.54(52.77)4.8(40.64)1.68(35.02)9.95(49.91)
Record low °C (°F)-16.0(3.2)-18.0(-0.4)-12.0(10.4)-2.0(28.4)3.0(37.4)11.0(51.8)14.0(57.2)14.0(57.2)9.0(48.2)0.0(0)-6.0(21.2)-9.0(15.8)-18.0(-0.4)
Average precipitation mm (inches)47.06(1.85)56.9(2.24)56.48(2.22)60.44(2.38)76.9(3.03)70.25(2.77)89.07(3.51)93.51(3.68)75.42(2.97)63.72(2.51)37.59(1.48)53.95(2.12)65.11(2.56)
Average precipitation days (≥ 1.0 mm)7.739.919.8211.1814.5513.4514.0914.9111.188.095.737.9110.71
Average relative humidity (%)72.4474.3471.6770.0174.4170.868.3869.7471.9973.2470.4474.4271.82
Mean monthly sunshine hours6.837.219.8912.0412.913.6713.8213.0111.367.57.466.9210.22

Climate Graph

The chart below shows the mean monthly temperature and precipitation of McLean in recent years.

McLean

McLean Temperature by Month

July
28.51°C | 83.32°F
August
26.88°C | 80.38°F
June
25.48°C | 77.86°F
September
23.22°C | 73.8°F
May
20.64°C | 69.15°F
October
16.69°C | 62.04°F
April
14.75°C | 58.55°F
November
9.48°C | 49.06°F
March
8.14°C | 46.65°F
December
5.26°C | 41.47°F
February
3.77°C | 38.79°F
January
1.82°C | 35.28°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature37.0°C (98.6°F)28.63°C (83.53°F)23.0°C (73.4°F)
Avg Temperature31.0°C (87.8°F)25.03°C (77.05°F)20.0°C (68.0°F)
Min Temperature23.0°C (73.4°F)18.1°C (64.58°F)12.0°C (53.6°F)
Dew PointMaxAverageMin
Dew Point22.0°C (71.6°F)17.77°C (63.99°F)11.0°C (51.8°F)
PrecipitationMaxAverageMinSum
Precipitation9.2mm | 0.36in0.87mm | 0.03in0.0mm | 0in26.0mm | 1.02in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind15.0kmh | 9.32mph8.17kmh | 5.08mph4.0kmh | 2.49mph
Gust Wind25.0kmh | 15.53mph13.57kmh | 8.43mph7.0kmh | 4.35mph
Sea Level PressureMaxAverageMin
Sea Level Pressure9.2mb0.87mb0.0mb
McLean

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
June° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2011-06-0131 | 87.822 | 71.66811 | 6.8430.06 | 10180.0 | 0.0
2011-06-0224 | 75.212 | 53.65315 | 9.3230.03 | 10170.0 | 0.0
2011-06-0322 | 71.611 | 51.8609 | 5.5930.12 | 10200.0 | 0.0
2011-06-0424 | 75.212 | 53.6616 | 3.7330.09 | 10190.0 | 0.0
2011-06-0524 | 75.218 | 64.4796 | 3.7329.97 | 10150.4 | 0.02
2011-06-0626 | 78.818 | 64.4775 | 3.1130.0 | 10160.2 | 0.01
2011-06-0721 | 69.818 | 64.4808 | 4.9730.0 | 10160.0 | 0.0
2011-06-0825 | 77.022 | 71.6787 | 4.3529.94 | 10140.0 | 0.0
2011-06-0931 | 87.822 | 71.6678 | 4.9729.91 | 10131.2 | 0.05
2011-06-1027 | 80.622 | 71.6807 | 4.3529.94 | 10141.2 | 0.05
2011-06-1123 | 73.422 | 71.6926 | 3.7329.91 | 10130.3 | 0.01
2011-06-1222 | 71.619 | 66.2836 | 3.7329.85 | 10110.4 | 0.02
2011-06-1321 | 69.813 | 55.47012 | 7.4629.91 | 10130.1 | 0.0
2011-06-1420 | 68.013 | 55.47211 | 6.8429.91 | 10131.4 | 0.06
2011-06-1524 | 75.213 | 55.4696 | 3.7329.94 | 10140.0 | 0.0
2011-06-1622 | 71.615 | 59.07612 | 7.4629.88 | 10129.2 | 0.36
2011-06-1725 | 77.018 | 64.4777 | 4.3529.88 | 10122.7 | 0.11
2011-06-1828 | 82.419 | 66.2744 | 2.4929.85 | 10110.2 | 0.01
2011-06-1925 | 77.020 | 68.0836 | 3.7329.83 | 10100.7 | 0.03
2011-06-2023 | 73.418 | 64.4838 | 4.9729.85 | 10113.2 | 0.13
2011-06-2126 | 78.821 | 69.8838 | 4.9729.91 | 10130.7 | 0.03
2011-06-2229 | 84.221 | 69.8758 | 4.9729.85 | 10110.2 | 0.01
2011-06-2326 | 78.820 | 68.07511 | 6.8429.77 | 10080.7 | 0.03
2011-06-2426 | 78.817 | 62.66810 | 6.2129.71 | 10060.3 | 0.01
2011-06-2524 | 75.216 | 60.8708 | 4.9729.85 | 10110.0 | 0.0
2011-06-2625 | 77.017 | 62.6726 | 3.7329.97 | 10150.0 | 0.0
2011-06-2726 | 78.819 | 66.27510 | 6.2129.91 | 10130.3 | 0.01
2011-06-2828 | 82.422 | 71.6815 | 3.1129.88 | 10122.3 | 0.09
2011-06-2926 | 78.817 | 62.66712 | 7.4629.91 | 10130.3 | 0.01
2011-06-3027 | 80.616 | 60.8647 | 4.3530.0 | 10160.0 | 0.0

McLean 11 Year Historical Weather Data

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