Mclean, Virginia, United States Climate

Weather: -1.8°C/28.76°F, Wind SW at 1.35 km/h, 89% Humidity, 0% Chance of rain

United States
(Photo by Matthew Payne on Unsplash)

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.

Country United States
City Virginia
Longitude -77.1772604
Latitude 38.9338676
Attitude/Elevation 86.27m (283.04ft)
Local time Thursday 00:17
Annual high temperature 18.74ºC (65.73ºF)
Annual low temperature 9.95ºC (49.91ºF)
Average annual precip. 65.11mm (2.56in)
Warmest month July (32.04ºC / 89.67ºF)
Coldest Month January (-2.2ºC / 28.04ºF)
Wettest Month August (93.51mm / 3.68in)
Driest Month November (37.59mm / 1.48in)
Number of days with rainfall (≥ 1.0 mm) 128.55 days (35.22%)
Days with no rain 236.45 days (64.78%)
Humidity 71.82%

Climate McLean: Weather By Month

Month Jan Feb Mar Apr May Jun Jul Aug Sep Nov Oct Dec Year
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) 7.73 9.91 9.82 11.18 14.55 13.45 14.09 14.91 11.18 8.09 5.73 7.91 10.71
Average relative humidity (%) 72.44 74.34 71.67 70.01 74.41 70.8 68.38 69.74 71.99 73.24 70.44 74.42 71.82
Mean monthly sunshine hours 6.83 7.21 9.89 12.04 12.9 13.67 13.82 13.01 11.36 7.5 7.46 6.92 10.22

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
Temperature Max Average Min
Max Temperature 37.0°C (98.6°F) 28.63°C (83.53°F) 23.0°C (73.4°F)
Avg Temperature 31.0°C (87.8°F) 25.03°C (77.05°F) 20.0°C (68.0°F)
Min Temperature 23.0°C (73.4°F) 18.1°C (64.58°F) 12.0°C (53.6°F)
Dew Point Max Average Min
Dew Point 22.0°C (71.6°F) 17.77°C (63.99°F) 11.0°C (51.8°F)
Precipitation Max Average Min Sum
Precipitation 9.2mm | 0.36in 0.87mm | 0.03in 0.0mm | 0in 26.0mm | 1.02in
Snowdepth 0.0mm | 0in 0.0mm | 0in 0.0mm | 0in 0.0mm | 0in
Wind Max Average Min
Wind 15.0kmh | 9.32mph 8.17kmh | 5.08mph 4.0kmh | 2.49mph
Gust Wind 25.0kmh | 15.53mph 13.57kmh | 8.43mph 7.0kmh | 4.35mph
Sea Level Pressure Max Average Min
Sea Level Pressure 9.2mb 0.87mb 0.0mb
McLean

Daily Observations

Time Temperature Dew Point Humidity Wind Speed Pressure Precipitation
June ° C | ° F ° C | ° F % Kph | Mph Hg | Mb Total (mm/in)
2011-06-01 31 | 87.8 22 | 71.6 68 11 | 6.84 30.06 | 1018 0.0 | 0.0
2011-06-02 24 | 75.2 12 | 53.6 53 15 | 9.32 30.03 | 1017 0.0 | 0.0
2011-06-03 22 | 71.6 11 | 51.8 60 9 | 5.59 30.12 | 1020 0.0 | 0.0
2011-06-04 24 | 75.2 12 | 53.6 61 6 | 3.73 30.09 | 1019 0.0 | 0.0
2011-06-05 24 | 75.2 18 | 64.4 79 6 | 3.73 29.97 | 1015 0.4 | 0.02
2011-06-06 26 | 78.8 18 | 64.4 77 5 | 3.11 30.0 | 1016 0.2 | 0.01
2011-06-07 21 | 69.8 18 | 64.4 80 8 | 4.97 30.0 | 1016 0.0 | 0.0
2011-06-08 25 | 77.0 22 | 71.6 78 7 | 4.35 29.94 | 1014 0.0 | 0.0
2011-06-09 31 | 87.8 22 | 71.6 67 8 | 4.97 29.91 | 1013 1.2 | 0.05
2011-06-10 27 | 80.6 22 | 71.6 80 7 | 4.35 29.94 | 1014 1.2 | 0.05
2011-06-11 23 | 73.4 22 | 71.6 92 6 | 3.73 29.91 | 1013 0.3 | 0.01
2011-06-12 22 | 71.6 19 | 66.2 83 6 | 3.73 29.85 | 1011 0.4 | 0.02
2011-06-13 21 | 69.8 13 | 55.4 70 12 | 7.46 29.91 | 1013 0.1 | 0.0
2011-06-14 20 | 68.0 13 | 55.4 72 11 | 6.84 29.91 | 1013 1.4 | 0.06
2011-06-15 24 | 75.2 13 | 55.4 69 6 | 3.73 29.94 | 1014 0.0 | 0.0
2011-06-16 22 | 71.6 15 | 59.0 76 12 | 7.46 29.88 | 1012 9.2 | 0.36
2011-06-17 25 | 77.0 18 | 64.4 77 7 | 4.35 29.88 | 1012 2.7 | 0.11
2011-06-18 28 | 82.4 19 | 66.2 74 4 | 2.49 29.85 | 1011 0.2 | 0.01
2011-06-19 25 | 77.0 20 | 68.0 83 6 | 3.73 29.83 | 1010 0.7 | 0.03
2011-06-20 23 | 73.4 18 | 64.4 83 8 | 4.97 29.85 | 1011 3.2 | 0.13
2011-06-21 26 | 78.8 21 | 69.8 83 8 | 4.97 29.91 | 1013 0.7 | 0.03
2011-06-22 29 | 84.2 21 | 69.8 75 8 | 4.97 29.85 | 1011 0.2 | 0.01
2011-06-23 26 | 78.8 20 | 68.0 75 11 | 6.84 29.77 | 1008 0.7 | 0.03
2011-06-24 26 | 78.8 17 | 62.6 68 10 | 6.21 29.71 | 1006 0.3 | 0.01
2011-06-25 24 | 75.2 16 | 60.8 70 8 | 4.97 29.85 | 1011 0.0 | 0.0
2011-06-26 25 | 77.0 17 | 62.6 72 6 | 3.73 29.97 | 1015 0.0 | 0.0
2011-06-27 26 | 78.8 19 | 66.2 75 10 | 6.21 29.91 | 1013 0.3 | 0.01
2011-06-28 28 | 82.4 22 | 71.6 81 5 | 3.11 29.88 | 1012 2.3 | 0.09
2011-06-29 26 | 78.8 17 | 62.6 67 12 | 7.46 29.91 | 1013 0.3 | 0.01
2011-06-30 27 | 80.6 16 | 60.8 64 7 | 4.35 30.0 | 1016 0.0 | 0.0

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