5-day weather forecast Fairfax Oct 21, 2026
23°Weather forecast Fairfax tomorrow Oct 21, 2026: sunny, temperature from 13 °C to 23 °C.
Precipitation probability 18%. Wind up to 4.11 m/s (gusts 11.22 m/s). Air humidity 44–82%, atmospheric pressure 765–767 mm Hg, UV index up to 4.3.
5 days at a glance — tap a day to open it
Sunrise 07:38
Sunset 18:33
Sunset 18:33
Waxing Gibbous86% illuminated
Moonrise 16:25 · Moonset 02:59
Moonrise 16:25 · Moonset 02:59
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 15 °C | 16% | 100% | 66% | 767 mm Hg | SSE 164° 3.19 (10.33) m/s | 0 |
| 01:00 | Overcast | 16 °C | 15% | 100% | 60% | 767 mm Hg | S 176° 4.11 (11.22) m/s | 0 |
| 02:00 | Overcast | 15 °C | 16% | 100% | 64% | 767 mm Hg | S 178° 3.5 (9.92) m/s | 0 |
| 03:00 |  Cloudy | 14 °C | 12% | 70% | 68% | 767 mm Hg | S 182° 3.11 (8.92) m/s | 0 |
| 04:00 | Cloudy | 13 °C | 15% | 82% | 70% | 767 mm Hg | S 183° 3.11 (7.75) m/s | 0 |
| 05:00 | Cloudy | 13 °C | 17% | 86% | 72% | 767 mm Hg | S 179° 3.11 (7) m/s | 0 |
| 06:00 | Cloudy | 13 °C | 18% | 78% | 78% | 767 mm Hg | S 177° 2.89 (6.69) m/s | 0 |
| 07:00 |  Clear | 13 °C | 10% | 5% | 82% | 767 mm Hg | S 169° 2.81 (4.5) m/s | 0 |
| 08:00 | Sunny | 13 °C | 10% | 4% | 81% | 767 mm Hg | S 169° 2.69 (3.42) m/s | 0 |
| 09:00 | Sunny | 14 °C | 6% | 4% | 71% | 767 mm Hg | S 174° 2.5 (5.17) m/s | 0.3 |
| 10:00 | Sunny | 17 °C | 3% | 0% | 60% | 767 mm Hg | S 187° 3.31 (4.94) m/s | 1.1 |
| 11:00 | Sunny | 19 °C | 2% | 0% | 54% | 767 mm Hg | S 188° 3.61 (4.83) m/s | 2.4 |
| 12:00 | Sunny | 21 °C | 2% | 0% | 50% | 767 mm Hg | S 183° 3.81 (4.83) m/s | 3.6 |
| 13:00 | Sunny | 22 °C | 1% | 0% | 46% | 766 mm Hg | S 187° 3.81 (4.72) m/s | 4.3 |
| 14:00 | Sunny | 23 °C | 1% | 0% | 45% | 766 mm Hg | S 188° 3.61 (4.11) m/s | 4.2 |
| 15:00 | Sunny | 23 °C | 1% | 0% | 44% | 765 mm Hg | S 191° 3.31 (3.81) m/s | 3.3 |
| 16:00 | Sunny | 23 °C | 1% | 0% | 45% | 765 mm Hg | S 181° 3.11 (3.39) m/s | 2 |
| 17:00 | Sunny | 23 °C | 1% | 0% | 46% | 765 mm Hg | S 180° 3.19 (3.53) m/s | 0.9 |
| 18:00 | Sunny | 21 °C | 3% | 0% | 55% | 765 mm Hg | SSE 159° 2.81 (3.61) m/s | 0.2 |
| 19:00 | Clear | 19 °C | 4% | 5% | 60% | 766 mm Hg | S 172° 3 (3.03) m/s | 0 |
| 20:00 | Clear | 18 °C | 5% | 20% | 62% | 766 mm Hg | S 177° 3.11 (4.19) m/s | 0 |
| 21:00 | Clear | 17 °C | 5% | 20% | 64% | 767 mm Hg | S 173° 3 (3.81) m/s | 0 |
| 22:00 | Clear | 17 °C | 5% | 5% | 65% | 767 mm Hg | SSE 165° 2.69 (2.81) m/s | 0 |
| 23:00 |  Partly cloudy | 16 °C | 7% | 30% | 65% | 767 mm Hg | SSE 161° 2.89 (3.61) m/s | 0 |
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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.