Fairfax, Virginia, United States Climate

Weather: 16.61°C/61.9°F, Wind SW at 2.06 km/h, 46% Humidity, 0% Chance of rain

United States
(Photo by Matt Briney on Unsplash)
Contents

Fairfax Climate Summary

Located at an elevation of 131.46 meters (431.3 feet) above sea level, Fairfax has a Humid subtropical, no dry season climate (Classification: Cfa). The district’s yearly temperature is 15.3ºC (59.54ºF) and it is 2.66% higher than United States’s averages. Fairfax typically receives about 136.13 millimeters (5.36 inches) of precipitation and has 158.35 rainy days (43.38% of the time) annually.

CountryUnited States
CityVirginia
Longitude-77.3063733
Latitude38.8462236
Attitude/Elevation131.46m (431.3ft)
Local timeThursday 16:01
Annual high temperature18.68ºC (65.62ºF)
Annual low temperature9.86ºC (49.75ºF)
Average annual precip.136.13mm (5.36in)
Warmest monthJuly (31.96ºC / 89.53ºF)
Coldest MonthJanuary (-2.15ºC / 28.13ºF)
Wettest MonthMay (162.95mm / 6.42in)
Driest MonthNovember (97.53mm / 3.84in)
Number of days with rainfall (≥ 1.0 mm)158.35 days (43.38%)
Days with no rain206.65 days (56.62%)
Humidity72.79%

Climate Fairfax: 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)40.0(104.0)38.0(100.4)38.0(100.4)34.0(93.2)26.0(78.8)22.0(71.6)40.0(104.0)
Average high °C (°F)4.54(40.17)7.0(44.6)11.6(52.88)18.43(65.17)24.16(75.49)28.92(84.06)31.96(89.53)30.42(86.76)26.76(80.17)20.0(68.0)12.52(54.54)7.8(46.04)18.68(65.62)
Daily mean °C (°F)1.87(35.37)3.78(38.8)8.11(46.6)14.7(58.46)20.62(69.12)25.35(77.63)28.33(82.99)26.65(79.97)23.07(73.53)16.59(61.86)9.33(48.79)5.21(41.38)15.3(59.54)
Average low °C (°F)-2.15(28.13)-0.82(30.52)3.06(37.51)8.64(47.55)14.26(57.67)18.57(65.43)21.45(70.61)20.37(68.67)17.32(63.18)11.39(52.5)4.7(40.46)1.56(34.81)9.86(49.75)
Record low °C (°F)-16.0(3.2)-18.0(-0.4)-11.0(12.2)-2.0(28.4)3.0(37.4)11.0(51.8)14.0(57.2)14.0(57.2)8.0(46.4)0.0(0)-7.0(19.4)-10.0(14.0)-18.0(-0.4)
Average precipitation mm (inches)111.28(4.38)130.08(5.12)135.45(5.33)133.84(5.27)162.95(6.42)130.11(5.12)155.36(6.12)160.31(6.31)135.05(5.32)147.62(5.81)97.53(3.84)134.04(5.28)136.13(5.36)
Average precipitation days (≥ 1.0 mm)11.1811.9113.3614.2717.015.017.017.4513.2710.277.919.7313.2
Average relative humidity (%)72.9275.1272.6570.9574.9471.2869.4171.1273.3974.5771.6875.4872.79
Mean monthly sunshine hours8.369.089.6610.212.1313.7512.9510.9610.419.828.166.9510.2

Climate Graph

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

Fairfax

Fairfax Temperature by Month

July
28.33°C | 82.99°F
August
26.65°C | 79.97°F
June
25.35°C | 77.63°F
September
23.07°C | 73.53°F
May
20.62°C | 69.12°F
October
16.59°C | 61.86°F
April
14.7°C | 58.46°F
November
9.33°C | 48.79°F
March
8.11°C | 46.6°F
December
5.21°C | 41.38°F
February
3.78°C | 38.8°F
January
1.87°C | 35.37°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 Temperature26.0°C (78.8°F)19.32°C (66.78°F)13.0°C (55.4°F)
Avg Temperature22.0°C (71.6°F)15.97°C (60.75°F)10.0°C (50.0°F)
Min Temperature19.0°C (66.2°F)10.55°C (50.99°F)5.0°C (41.0°F)
Dew PointMaxAverageMin
Dew Point20.0°C (68.0°F)10.39°C (50.7°F)2.0°C (35.6°F)
PrecipitationMaxAverageMinSum
Precipitation20.3mm | 0.8in2.77mm | 0.11in0.0mm | 0in85.8mm | 3.38in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind20.0kmh | 12.43mph11.0kmh | 6.84mph5.0kmh | 3.11mph
Gust Wind32.0kmh | 19.88mph17.74kmh | 11.02mph8.0kmh | 4.97mph
Sea Level PressureMaxAverageMin
Sea Level Pressure20.3mb2.77mb0.0mb
Fairfax

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
October° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2014-10-0119 | 66.216 | 60.8885 | 3.1129.97 | 10152.6 | 0.1
2014-10-0220 | 68.015 | 59.0847 | 4.3530.09 | 10190.2 | 0.01
2014-10-0319 | 66.216 | 60.88912 | 7.4629.91 | 10131.4 | 0.06
2014-10-0416 | 60.88 | 46.46715 | 9.3229.71 | 10061.6 | 0.06
2014-10-0513 | 55.42 | 35.6569 | 5.5929.91 | 10130.0 | 0.0
2014-10-0616 | 60.87 | 44.66415 | 9.3229.97 | 10150.0 | 0.0
2014-10-0719 | 66.213 | 55.47713 | 8.0829.97 | 10158.3 | 0.33
2014-10-0820 | 68.012 | 53.67312 | 7.4629.91 | 10137.8 | 0.31
2014-10-0918 | 64.49 | 48.2668 | 4.9730.06 | 10180.0 | 0.0
2014-10-1016 | 60.812 | 53.6837 | 4.3530.06 | 10183.9 | 0.15
2014-10-1112 | 53.611 | 51.8948 | 4.9730.03 | 10172.7 | 0.11
2014-10-1214 | 57.28 | 46.4799 | 5.5930.24 | 10240.0 | 0.0
2014-10-1318 | 64.416 | 60.8919 | 5.5930.21 | 10230.3 | 0.01
2014-10-1422 | 71.620 | 68.09116 | 9.9430.06 | 10181.2 | 0.05
2014-10-1521 | 69.819 | 66.29613 | 8.0829.83 | 101020.3 | 0.8
2014-10-1616 | 60.813 | 55.4906 | 3.7329.74 | 10073.6 | 0.14
2014-10-1718 | 64.412 | 53.67911 | 6.8429.74 | 10070.7 | 0.03
2014-10-1816 | 60.810 | 50.07315 | 9.3229.74 | 10070.0 | 0.0
2014-10-1910 | 50.03 | 37.46715 | 9.3230.03 | 10170.0 | 0.0
2014-10-2013 | 55.46 | 42.87010 | 6.2130.03 | 10171.0 | 0.04
2014-10-2116 | 60.811 | 51.8856 | 3.7329.85 | 10119.5 | 0.37
2014-10-2212 | 53.610 | 50.09017 | 10.5629.91 | 101312.3 | 0.48
2014-10-2313 | 55.47 | 44.67320 | 12.4329.91 | 10130.0 | 0.0
2014-10-2414 | 57.28 | 46.47215 | 9.3229.94 | 10140.0 | 0.0
2014-10-2516 | 60.89 | 48.26910 | 6.2129.85 | 10110.0 | 0.0
2014-10-2615 | 59.07 | 44.66514 | 8.729.83 | 10100.0 | 0.0
2014-10-2716 | 60.86 | 42.8618 | 4.9730.03 | 10170.0 | 0.0
2014-10-2820 | 68.013 | 55.47212 | 7.4629.97 | 10150.0 | 0.0
2014-10-2915 | 59.013 | 55.4908 | 4.9729.94 | 10148.4 | 0.33
2014-10-3012 | 53.66 | 42.87310 | 6.2130.03 | 10170.0 | 0.0
2014-10-3110 | 50.04 | 39.2706 | 3.7329.91 | 10130.0 | 0.0

Fairfax 11 Year Historical Weather Data

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