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Arlington Weather by Month
Average temperatures, rainfall and humidity for Arlington, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Arlington month looks like before you travel — then check the live Arlington forecast for the days ahead.
Warmest month
August
36°C average high
Coolest month
January
3°C average low
Wettest month
May
135 mm of rain
Driest month
July
37 mm of rain
Average temperature and rainfall in Arlington by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 14°C | 3°C | -12°C / 28°C | 47 mm | 62% | 15 km/h |
| February | 17°C | 6°C | -17°C / 34°C | 49 mm | 64% | 16 km/h |
| March | 22°C | 11°C | -10°C / 35°C | 64 mm | 60% | 18 km/h |
| April | 25°C | 14°C | 1°C / 35°C | 68 mm | 64% | 19 km/h |
| May | 29°C | 19°C | 4°C / 37°C | 135 mm | 67% | 16 km/h |
| June | 33°C | 23°C | 15°C / 40°C | 67 mm | 64% | 15 km/h |
| July | 36°C | 25°C | 18°C / 43°C | 37 mm | 58% | 14 km/h |
| August | 36°C | 25°C | 17°C / 43°C | 50 mm | 57% | 13 km/h |
| September | 32°C | 22°C | 11°C / 43°C | 57 mm | 61% | 12 km/h |
| October | 27°C | 15°C | -1°C / 36°C | 96 mm | 62% | 15 km/h |
| November | 20°C | 9°C | -6°C / 33°C | 62 mm | 65% | 14 km/h |
| December | 17°C | 6°C | -12°C / 30°C | 94 mm | 66% | 14 km/h |
Best time to visit Arlington
The most comfortable time to visit Arlington is generally March to April and November, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 827 mm a year.
Travellers who prefer heat should aim for August, when highs average 36°C. May is the month to avoid if rain would spoil your plans — it averages 135 mm, roughly 4× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Arlington forecast for what is happening now.