5-day weather forecast Fairfax Sep 11, 2026

35°20° · Sunny

Weather forecast Fairfax Friday Sep 11, 2026: sunny, temperature from 20 °C to 35 °C.

Precipitation probability 87%. Wind up to 8.69 m/s (gusts 14.03 m/s). Air humidity 29–92%, atmospheric pressure 752–760 mm Hg, UV index up to 6.8.

Sunrise 06:58
Sunset 19:37
New Moon0% illuminated
Moonrise 07:21 · Moonset 19:42
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Table

Forecast from 20 °C to 35 °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)232323222221212121232628303132343535343333303120
Precipitation (mm/hr)0000000000000000000000.560.153.98

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 (%)000000000002310010058055499511100100100
Rain chance (%)7771012141413952210104111391372087

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)3.113.393.193.113.113.53.6144.55.696.196.897.397.397.6188.117.897.3976.194.695.58.69
Wind gust (m/s)3.315.335.835.645.728.119.511.1411.149.3698.839.149.229.59.839.619.399.7211.1112.9211.3914.0313.22
Wind direction (°)SE 134°ESE 118°SE 145°SSE 148°SSE 151°SSE 153°SSE 161°S 170°S 173°S 177°S 172°S 177°S 181°S 183°S 178°S 179°S 181°S 188°S 182°S 175°S 172°SSE 151°S 173°N 355°

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 (%)747476838891929181665445403936333029303338464692

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)760759759759759759758759759759758758757757755755754754753752752754754758

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 Index000000000.212.44.35.96.86.75.63.820.60.10000

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)3.1333.23.43.53.743.83.73.53.12.92.82.82.72.82.82.93.23.33.43.33.3
PM10 (µg/m³)3.33.23.23.43.63.844.44.143.93.63.43.33.23.23.13.13.23.43.53.53.43.4
Ozone (O₃) (µg/m³)5153525049484749556372819198102103103101989488827672
NO₂ (µg/m³)11.78.98.48.89.39.810.310.18.463.92.61.610.70.811.42.12.83.64.45.15.6
SO₂ (µg/m³)0.50.60.811.21.41.71.81.81.71.61.410.80.70.60.60.60.70.811.21.31.3
CO (µg/m³)141139138138140146153160166171170159141128123122122123126128128127126125

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.