Fairfax
May
Weather in Fairfax for May 2025
Your guide to Fairfax weather in May - trends and predictions
In general, the average temperature in Fairfax at the beginning of May is 22.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 25.7 °F by the end of May.
Fairfax experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 164.3 mm.
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Temperatures
Rain 🌧️
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10
Dry days
21
Rainy days
0
Snow days
23°/14°
Temperatures
14 km/h
Avg max wind
79 %
Avg humidity
Fairfax in May average weather
Move between months or click on a day
| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  24° | 2  28° | 3  24° | ||||
| 4  13° | 5 20° | 6 25° | 7 24° | 8  29° | 9 24° | 10  15° |
| 11 17° | 12 15° | 13 23° | 14 19° | 15 16° | 16 20° | 17 23° |
| 18  16° | 19 20° | 20  23° | 21 28° | 22  31° | 23 24° | 24 27° |
| 25 29° | 26 31° | 27 29° | 28  27° | 29 22° | 30 21° | 31 21° |
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Temperatures trend during May in Fairfax
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Light rain shower | 24° /16° | 1.7 mm | 5 | |
| May 2 | Partly cloudy | 28° /14° | 0 mm | 7 | |
| May 3 | Sunny | 24° /13° | 1.6 mm | 6 | |
| May 4 | Light rain | 13° /12° | 10.6 mm | 3 | |
| May 5 | Light rain shower | 20° /11° | 12.5 mm | 5 | |
| May 6 | Light rain shower | 25° /16° | 10.9 mm | 6 | |
| May 7 | Light rain shower | 24° /16° | 4.5 mm | 5 | |
| May 8 | Patchy light rain with thunder | 29° /17° | 1.3 mm | 6 | |
| May 9 | Light rain shower | 24° /17° | 3.2 mm | 5 | |
| May 10 | Moderate or heavy rain shower | 15° /11° | 29.1 mm | 4 | |
| May 11 | Light drizzle | 17° /9° | 1.7 mm | 4 | |
| May 12 | Light drizzle | 15° /8° | 1.7 mm | 4 | |
| May 13 | Sunny | 23° /8° | 0 mm | 6 | |
| May 14 | Light rain shower | 19° /15° | 5.4 mm | 4 | |
| May 15 | Light rain shower | 16° /15° | 33.2 mm | 4 | |
| May 16 | Patchy rain possible | 20° /14° | 0.5 mm | 5 | |
| May 17 | Patchy rain possible | 23° /13° | 0 mm | 5 | |
| May 18 | Moderate rain | 16° /13° | 16 mm | 4 | |
| May 19 | Patchy rain possible | 20° /13° | 0.2 mm | 5 | |
| May 20 | Fog | 23° /13° | 0.1 mm | 5 | |
| May 21 | Mist | 28° /13° | 0 mm | 6 | |
| May 22 | Thundery outbreaks possible | 31° /15° | 2.6 mm | 7 | |
| May 23 | Light rain shower | 24° /16° | 7.8 mm | 5 | |
| May 24 | Patchy rain possible | 27° /16° | 0.1 mm | 6 | |
| May 25 | Thundery outbreaks possible | 29° /18° | 0.3 mm | 6 | |
| May 26 | Patchy light rain with thunder | 31° /17° | 7.7 mm | 7 | |
| May 27 | Light rain shower | 29° /19° | 8.2 mm | 6 | |
| May 28 | Cloudy | 27° /16° | 0 mm | 6 | |
| May 29 | Light rain shower | 22° /13° | 3.2 mm | 5 | |
| May 30 | Patchy rain possible | 21° /12° | 0.3 mm | 5 | |
| May 31 | Sunny | 21° /10° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Fairfax in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Fairfax forecast closer to your planned date for the most up-to-date weather information.
Fairfax in May - FAQ
What are the expected maximum and minimum temperatures in Fairfax during May?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Fairfax during May?
Significant rainfall exceeding 164.3 mm is expected in Fairfax during May, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Fairfax during May?
The average wind speed in Fairfax during May is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Fairfax
Explore the daily rainfall trends and prepare for Fairfaxs May weather 💧
UV exposure in Fairfax during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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