Fairfax County (Herndon)
Today
Today weather in Fairfax County
Saturday, August 1st, 2026
35°
Sunny
Low 19°
Official weather alert: Small Craft Advisory. Today, Fairfax County is set to face a notably hot day, with temperatures spiking up to 34 °F and offering slight relief at 18 °F by night. It'll be quite breezy in Fairfax County Today with average wind speeds of 17 km/h. There's a slight chance of rain at 3%.
35° / 19°
Temp
3%
Rain
17 km/h
Wind
61%
Humidity
Fairfax County Weather Pages
Fairfax County hourly forecast for today
Scroll right to see more weather forecasts for Fairfax County today
| 12:00 AM | 01:00 AM | 02:00 AM | 03:00 AM | 04:00 AM | 05:00 AM | 06:00 AM | 06:10 AM | 07:00 AM | 08:00 AM | 09:00 AM | 10:00 AM | 11:00 AM | 12:00 PM | 01:00 PM | 02:00 PM | 03:00 PM | 04:00 PM | 05:00 PM | 06:00 PM | 07:00 PM | 08:00 PM | 08:21 PM | 09:00 PM | 10:00 PM | 11:00 PM | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| weather |  | | | | | | |  | | | | | | | | | | | | | | |  | | | | Next |
| temperatures | 20.7° | 20° | 19.6° | 19.3° | 19° | 18.8° | 18.6° | Sunrise | 18.8° | 20.8° | 22.6° | 24.7° | 29.8° | 29.6° | 30.9° | 31.5° | 34.9° | 32.2° | 34.4° | 33.4° | 30.4° | 28.5° | Sunset | 27.7° | 26.9° | 26.1° | |
| Feels like | 21° | 20.7° | 20.3° | 20.2° | 19.8° | 19.5° | 19.4° | 19.8° | 22.2° | 23.6° | 25.8° | 32.6° | 30.6° | 31.4° | 30.2° | 34.1° | 30.7° | 34.2° | 32.9° | 30.8° | 29.1° | 28.3° | 27.4° | 27.1° | |||
| wind speed | 8 km/h | 7 km/h | 6 km/h | 5 km/h | 6 km/h | 7 km/h | 7 km/h | 6 km/h | 7 km/h | 9 km/h | 10 km/h | 12 km/h | 14 km/h | 16 km/h | 16 km/h | 17 km/h | 16 km/h | 13 km/h | 13 km/h | 12 km/h | 10 km/h | 11 km/h | 12 km/h | 13 km/h | |||
| wind degree | 179° | 209° | 201° | 197° | 185° | 191° | 194° | 190° | 191° | 192° | 184° | 185° | 181° | 181° | 180° | 187° | 182° | 169° | 161° | 162° | 148° | 140° | 135° | 144° | |||
| wind direction | S | SSW | SSW | SSW | S | S | SSW | S | S | SSW | S | S | S | S | S | S | S | S | SSE | SSE | SSE | SE | SE | SE | |||
| Precipitation | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | |||
| chance for rain | 6% | 8% | 9% | 9% | 10% | 11% | 12% | 11% | 10% | 7% | 5% | 3% | 2% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 2% | 2% | 2% | 4% | |||
| chance for snow | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | |||
| humidity | 72% | 78% | 79% | 80% | 83% | 85% | 86% | 86% | 82% | 74% | 68% | 61% | 51% | 44% | 38% | 35% | 36% | 35% | 35% | 45% | 50% | 52% | 53% | 66% | |||
| dew point | 15.5° | 16.1° | 15.8° | 15.7° | 16° | 16.3° | 16.3° | 16.4° | 17.6° | 17.7° | 18.5° | 21.4° | 18.3° | 17.3° | 15.4° | 17.3° | 15.1° | 16.8° | 16.1° | 17.1° | 17.1° | 16.8° | 16.4° | 19.2° | |||
| visibility | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | |||
| cloud cover | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 3% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | |||
| UV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0.7 | 1.9 | 3.4 | 4.5 | 6.5 | 5.4 | 6.5 | 5.8 | 4.4 | 2 | 1 | 0.3 | 0 | 0 | 0 | 0 |
Weather in Fairfax County today
The weather in Fairfax County today is expected to be significantly warmer than usual, with a forecast temperature of 35 °F, compared to an average of 24 °F for August 1st in recent years.
temperatures
35 °F
rain
0 mm
wind
17 km/h
UV
High
Fairfax County daylight overview ☀️
Today in Fairfax County, The sun rises at 06:10 and sets at 20:21, giving a total daylight duration of 14 hours and 11 minutes.
Top locations in Fairfax County
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What to wear today in Fairfax County? clothing recommendations
Stay comfortably stylish - your tailored guide for today's Fairfax County forecast.
Short-sleeve shirt
Shorts
Lightweight pants
Breathable footwear
Sunglasses
Wide brimmed hat
Sunscreen
Flip flop
The weather today in Fairfax County - FAQ
What is the maximum temperature for today in Fairfax County?
The maximum temperature for today in Fairfax County is expected to be 35° degrees. Please dress accordingly to stay comfortable throughout the day.
Will it rain today in Fairfax County? 🌧️
Yes, there is a 3% chance of rain in Fairfax County today. We recommend carrying an umbrella or rain gear to stay dry.
What will be the wind speed today in Fairfax County? 🌀
The wind in Fairfax County is expected to blow at 17 km/h. This could affect outdoor activities, so plan accordingly.
How should I dress for the weather in Fairfax County today?
Given the forecast of 35 °F with a 3% chance of rain, we advise checking our "What to wear today" section for recommendations. There, you will find tailored advice to help you stay comfortable and prepared for the weather conditions in Fairfax County today.
What is the sunrise and sunset time for Fairfax County today?
The sun is expected to rise at 06:10 and set at 20:21 in Fairfax County.
How accurate is the weather forecast Fairfax County today? ✅
Fairfax County weather forecast for today is based on the most current and sophisticated meteorological models available. While we strive for accuracy, weather conditions can change unexpectedly, so we recommend checking for updates regularly.
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Where is Fairfax County?Get accurate weather forecasts for Fairfax County, located at latitude 38.97 and longitude -77.386. Stay updated with localized weather information tailored for Fairfax County.
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