5-day weather forecast Fairfax Sep 13, 2026

30°21° · Overcast

Weather forecast Fairfax tomorrow Sep 13, 2026: overcast, temperature from 21 °C to 30 °C.

Precipitation probability 94%. Wind up to 2.19 m/s (gusts 5.83 m/s). Air humidity 54–99%, atmospheric pressure 760–761 mm Hg, UV index up to 6.3.

Sunrise 06:49
Sunset 19:21
Waxing Crescent8% illuminated
Moonrise 09:32 · Moonset 20:23
Chart
Table

Forecast from 21 °C to 30 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)222222212121212121212326282930292828282827272626
Precipitation (mm/hr)01.1800.860.427.680.080.050.010.080.030.020.020.020.0200.090000000

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)9710010010010010010010010098808379599710010099989510094100100
Rain chance (%)38794375639451484447271812813132216171718181919

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)1.811.311.191.191.391.810.811.311.390.891.891.892.1921.691.8110.690.690.690.691.111.391.81
Wind gust (m/s)5.8333.424.614.425.642.032.723.612.113.723.723.693.222.812.892.311.610.720.720.721.111.613.22
Wind direction (°)SSW 199°WSW 250°WSW 250°SW 226°SSW 206°SW 234°WSW 245°WSW 238°WSW 245°W 275°NW 321°NNW 330°NNW 333°NW 323°NW 305°WNW 299°WNW 303°WNW 299°SW 232°S 190°SSE 165°SSW 210°W 260°WNW 291°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)979998989898989897958874625654556466687071727373

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)761761761761761760761761761761761761761761760760760760760760761761761761

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index000000000.31.12.84.76.36.13.73.12.41.20.500000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)5.532.5332.92.933.94.84.64.64.33.73.73.73.94.24.68.913.313.913.612.6
PM10 (µg/m³)5.83.12.63.13.12.933.144.84.64.74.33.73.83.844.34.78.913.31413.712.6
Ozone (O₃) (µg/m³)566265605144403944608198104106106109111106906748362926
NO₂ (µg/m³)16.511.37.77.28.49.39.69.89.37.75.53.72.72.11.91.10.6311.222.430.633.433.131.1
SO₂ (µg/m³)1.41.211111.11.11.21.21.11.11.11.21.31.31.31.41.622.22.32.42.4
CO (µg/m³)153148144139134132134138142148154156151142136131129136163199221217199184

Fairfax on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.