Fairfax County (Herndon)
October
Weather in Fairfax County, Virginia for October 2027
Your guide to Fairfax County weather in October - trends and predictions
Fairfax County experiences moderate rainfall in October, with an average of 10 rainy days and a total precipitation of 334.5 mm.
Is October a good time to visit Fairfax County? check out the best time to travel to Fairfax County page.
✨ Is October a good time to visit Fairfax County? – Ask the AI Weatherman
Rain 🌧️
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21
Dry days
10
Rainy days
0
Snow days
19°/10°
Temperatures
17 km/h
Avg max wind
67 %
Avg humidity
Fairfax County Weather October
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Temperatures trend during October in Fairfax County
See the weather trend as well as the moving average line
October weather in Fairfax County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Cloudy | 27° /16° | 0 mm | 4 | |
| Oct. 2 |  Patchy rain possible | 26° /13° | 1.9 mm | 3 | |
| Oct. 3 |  Light rain | 21° /14° | 4.1 mm | 3 | |
| Oct. 4 | Patchy rain possible | 22° /13° | 1.5 mm | 3 | |
| Oct. 5 |  Partly cloudy | 25° /13° | 0 mm | 5 | |
| Oct. 6 |  Mist | 21° /11° | 0 mm | 4 | |
| Oct. 7 |  Overcast | 24° /12° | 0.1 mm | 4 | |
| Oct. 8 |  Heavy rain | 23° /13° | 31.3 mm | 4 | |
| Oct. 9 |  Sunny | 21° /9° | 0 mm | 3 | |
| Oct. 10 | Overcast | 18° /8° | 0.1 mm | 3 | |
| Oct. 11 | Heavy rain | 19° /14° | 43 mm | 2 | |
| Oct. 12 | Light rain | 20° /14° | 7.2 mm | 1 | |
| Oct. 13 |  Moderate rain | 20° /12° | 13.1 mm | 3 | |
| Oct. 14 | Light rain | 23° /15° | 1 mm | 3 | |
| Oct. 15 | Light rain | 20° /14° | 2.5 mm | 2 | |
| Oct. 16 | Light rain | 24° /10° | 3.3 mm | 2 | |
| Oct. 17 | Light rain | 17° /6° | 3.7 mm | 3 | |
| Oct. 18 | Partly cloudy | 18° /6° | 0 mm | 3 | |
| Oct. 19 | Patchy rain possible | 20° /9° | 1 mm | 3 | |
| Oct. 20 | Light rain | 20° /9° | 3 mm | 3 | |
| Oct. 21 | Cloudy | 20° /7° | 0 mm | 3 | |
| Oct. 22 | Partly cloudy | 18° /8° | 0 mm | 3 | |
| Oct. 23 | Overcast | 16° /8° | 0 mm | 3 | |
| Oct. 24 | Partly cloudy | 16° /6° | 0 mm | 3 | |
| Oct. 25 | Cloudy | 16° /5° | 0 mm | 3 | |
| Oct. 26 | Overcast | 18° /6° | 0 mm | 2 | |
| Oct. 27 | Overcast | 16° /9° | 0 mm | 2 | |
| Oct. 28 | Overcast | 15° /8° | 0 mm | 1 | |
| Oct. 29 | Heavy rain | 16° /8° | 58 mm | 1 | |
| Oct. 30 |  Moderate or heavy rain with thunder | 19° /11° | 50.9 mm | 1 | |
| Oct. 31 | Sunny | 17° /7° | 0 mm | 1 | |
| Next | |||||
Important Notice
Our weather forecast for Fairfax County in October 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 County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Fairfax County in October - FAQ
What are the expected maximum and minimum temperatures in Fairfax County during October?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Fairfax County during October?
Significant rainfall exceeding 334.5 mm is expected in Fairfax County during October, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Fairfax County during October?
The average wind speed in Fairfax County during October is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Fairfax County
Explore the daily rainfall trends and prepare for Fairfax Countys October weather 💧
Typically, Fairfax County has 10 rainy days in October with a total of 334.5 mm of rainfall.
UV exposure in Fairfax County during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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