5-day weather forecast Fairfax Nov 13, 2026
9°Weather forecast Fairfax tomorrow Nov 13, 2026: overcast, temperature from 5 °C to 9 °C.
Precipitation probability 21%. Wind up to 6.19 m/s (gusts 12.11 m/s). Air humidity 51–76%, atmospheric pressure 749–758 mm Hg, UV index up to 2.1.
Weather Alerts
Small Craft Advisory issued November 12 at 5:30PM EST until November 13 at 6:00PM EST by NWS Baltimore MD/Washington DC
Small Craft Advisory
* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt
expected.
* WHERE...Tidal Potomac River from Key Bridge to Smith Point VA,
and Chesapeake Bay and adjoining estuaries north of Smith
Point VA.
* WHEN...Until 6 PM EST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
5 days at a glance — tap a day to open it
Sunrise 06:49
Sunset 16:57
Sunset 16:57
Waxing Crescent22% illuminated
Moonrise 11:14 · Moonset 20:30
Moonrise 11:14 · Moonset 20:30
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Cloudy | 9 °C | 15% | 64% | 76% | 749 mm Hg | NW 310° 5.19 (9.72) m/s | 0 |
| 01:00 |  Patchy rain possible | 8 °C | 16% (0.01 mm/hr) | 72% | 75% | 749 mm Hg | NW 312° 5.19 (10) m/s | 0 |
| 02:00 | Cloudy | 8 °C | 17% | 81% | 73% | 750 mm Hg | NW 316° 5.39 (10.36) m/s | 0 |
| 03:00 | Patchy rain possible | 7 °C | 19% (0.01 mm/hr) | 91% | 72% | 750 mm Hg | NW 316° 5.31 (10.39) m/s | 0 |
| 04:00 | Patchy rain possible | 7 °C | 21% (0.02 mm/hr) | 100% | 72% | 750 mm Hg | NW 318° 5.39 (10.58) m/s | 0 |
| 05:00 | Patchy rain possible | 7 °C | 20% (0.01 mm/hr) | 100% | 71% | 751 mm Hg | NW 320° 5.5 (10.64) m/s | 0 |
| 06:00 |  Overcast | 6 °C | 19% | 100% | 70% | 751 mm Hg | NW 320° 5.61 (10.78) m/s | 0 |
| 07:00 | Overcast | 6 °C | 18% | 99% | 69% | 752 mm Hg | NW 321° 5.61 (10.89) m/s | 0 |
| 08:00 | Overcast | 6 °C | 17% | 97% | 67% | 752 mm Hg | NW 324° 5.81 (11.39) m/s | 0.2 |
| 09:00 | Overcast | 7 °C | 16% | 98% | 64% | 753 mm Hg | NNW 327° 5.89 (11.67) m/s | 0.6 |
| 10:00 | Overcast | 7 °C | 15% | 98% | 61% | 754 mm Hg | NNW 331° 6.19 (12.11) m/s | 1.2 |
| 11:00 | Overcast | 7 °C | 14% | 98% | 58% | 754 mm Hg | NNW 333° 6 (11.86) m/s | 1.8 |
| 12:00 | Overcast | 8 °C | 13% | 99% | 56% | 754 mm Hg | NNW 336° 6 (11.83) m/s | 2.1 |
| 13:00 | Overcast | 8 °C | 13% | 100% | 53% | 754 mm Hg | NNW 337° 5.81 (11.64) m/s | 2 |
| 14:00 | Overcast | 8 °C | 13% | 100% | 52% | 754 mm Hg | NNW 338° 5.5 (11.36) m/s | 1.4 |
| 15:00 | Overcast | 8 °C | 13% | 100% | 52% | 754 mm Hg | NNW 341° 5 (11.03) m/s | 0.7 |
| 16:00 | Overcast | 8 °C | 12% | 100% | 51% | 755 mm Hg | NNW 347° 4.69 (10.69) m/s | 0.3 |
| 17:00 | Overcast | 8 °C | 12% | 94% | 52% | 755 mm Hg | N 350° 4.5 (10.03) m/s | 0 |
| 18:00 | Cloudy | 7 °C | 11% | 87% | 53% | 756 mm Hg | NNW 348° 4.31 (9.22) m/s | 0 |
| 19:00 | Cloudy | 7 °C | 10% | 78% | 55% | 756 mm Hg | NNW 344° 4.11 (8.58) m/s | 0 |
| 20:00 | Cloudy | 6 °C | 9% | 69% | 56% | 757 mm Hg | NNW 339° 3.89 (8.25) m/s | 0 |
| 21:00 |  Partly cloudy | 6 °C | 6% | 47% | 56% | 757 mm Hg | NNW 335° 3.69 (7.94) m/s | 0 |
| 22:00 | Partly cloudy | 5 °C | 7% | 50% | 57% | 758 mm Hg | NNW 330° 3.5 (7.75) m/s | 0 |
| 23:00 | Partly cloudy | 5 °C | 7% | 52% | 57% | 758 mm Hg | NNW 329° 3.39 (7.81) m/s | 0 |
Fairfax on the map
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.