Cold desert climate
Climate Manassas - Virginia
Annual high67ºF
Annual low45ºF
| Month | HighºF | LowºF |
|---|---|---|
| Jan | 43 | 24 |
| Feb | 47 | 25 |
| Mar | 56 | 32 |
| Apr | 67 | 42 |
| May | 75 | 53 |
| Jun | 84 | 63 |
| Jul | 89 | 68 |
| Aug | 87 | 67 |
| Sep | 80 | 58 |
| Oct | 68 | 45 |
| Nov | 58 | 35 |
| Dec | 47 | 28 |
- JanHigh 43ºFLow 24ºF
- FebHigh 47ºFLow 25ºF
- MarHigh 56ºFLow 32ºF
- AprHigh 67ºFLow 42ºF
- MayHigh 75ºFLow 53ºF
- JunHigh 84ºFLow 63ºF
- JulHigh 89ºFLow 68ºF
- AugHigh 87ºFLow 67ºF
- SepHigh 80ºFLow 58ºF
- OctHigh 68ºFLow 45ºF
- NovHigh 58ºFLow 35ºF
- DecHigh 47ºFLow 28ºF
Climate summary
What is the average weather in Manassas, Virginia?
Manassas experiences a cold desert climate, defined by very low annual precipitation that is scarce year-round. The inland location amplifies a very large seasonal temperature contrast, bringing hot summers and cold winters. Precipitation is spread fairly evenly, but remains infrequent throughout the year.
Manassas weather averages
Annual high67ºF
Annual low45ºF
Daily normals Manassas - Virginia - January
| Day | HighºF | LowºF |
|---|---|---|
| Jan 1 | 42.7 | 25.5 |
| Jan 2 | 42.6 | 25.4 |
| Jan 3 | 42.5 | 25.2 |
| Jan 4 | 42.4 | 25.1 |
| Jan 5 | 42.3 | 24.9 |
| Jan 6 | 42.2 | 24.8 |
| Jan 7 | 42.2 | 24.7 |
| Jan 8 | 42.1 | 24.5 |
| Jan 9 | 42.1 | 24.4 |
| Jan 10 | 42.0 | 24.3 |
| Jan 11 | 42.0 | 24.2 |
| Jan 12 | 42.0 | 24.1 |
| Jan 13 | 42.0 | 24.1 |
| Jan 14 | 42.0 | 24.0 |
| Jan 15 | 42.0 | 23.9 |
| Jan 16 | 42.1 | 23.9 |
| Jan 17 | 42.1 | 23.8 |
| Jan 18 | 42.1 | 23.8 |
| Jan 19 | 42.2 | 23.8 |
| Jan 20 | 42.2 | 23.7 |
| Jan 21 | 42.3 | 23.7 |
| Jan 22 | 42.4 | 23.7 |
| Jan 23 | 42.5 | 23.7 |
| Jan 24 | 42.5 | 23.7 |
| Jan 25 | 42.6 | 23.8 |
| Jan 26 | 42.7 | 23.8 |
| Jan 27 | 42.8 | 23.8 |
| Jan 28 | 42.9 | 23.9 |
| Jan 29 | 43.0 | 23.9 |
| Jan 30 | 43.2 | 24.0 |
| Jan 31 | 43.3 | 24.1 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Manassas - September 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Sep 1 | – | – | 0.00 |
| Sep 2 | 93.9 | 73.9 | 0.00 |
| Sep 3 | 91.0 | 71.1 | 0.55 |
| Sep 4 | 91.0 | 70.0 | 0.30 |
| Sep 5 | 90.0 | 68.0 | 0.29 |
| Sep 6 | 80.1 | 63.0 | 0.00 |
| Sep 7 | 81.0 | 61.0 | 0.00 |
| Sep 8 | 80.1 | 57.9 | 0.00 |
| Sep 9 | 84.0 | 59.0 | 0.00 |
| Sep 10 | 88.0 | 69.1 | 0.00 |
| Sep 11 | 88.0 | 69.1 | 0.80 |
| Sep 12 | 79.0 | 69.1 | – |
| Sep 13 | 79.0 | 71.1 | – |
| Sep 14 | 84.9 | 70.0 | 0.00 |
| Sep 15 | 77.0 | 54.0 | 0.00 |
| Sep 16 | 75.9 | 55.0 | 0.00 |
| Sep 17 | 82.9 | 66.9 | 0.00 |
| Sep 18 | 88.0 | 66.9 | 0.30 |
| Sep 19 | 89.1 | 64.9 | 0.00 |
| Sep 20 | 78.1 | 66.9 | 0.00 |
| Sep 21 | 82.0 | 66.9 | 0.00 |
| Sep 22 | – | – | 0.00 |
| Sep 23 | – | – | – |
| Sep 24 | – | 51.1 | – |
| Sep 25 | 72.0 | 51.1 | 0.00 |
| Sep 26 | – | – | 0.00 |
| Sep 27 | 69.1 | 55.9 | 0.30 |
| Sep 28 | 63.0 | 59.0 | 0.00 |
| Sep 29 | 71.1 | 61.0 | 0.00 |
| Sep 30 | 72.0 | 55.9 | 0.00 |
The data for September 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature93.9ºF · Sep 2
- Lowest max temperature63.0ºF · Sep 28
- Highest min temperature73.9ºF · Sep 2
- Lowest min temperature51.1ºF · Sep 24
Geo Manassas - Virginia
Location
- Country
- United States
- State
- Virginia
- County
- –
- City
- Manassas
- Zip Code
- 20108
- Elevation
- 308 ft
- Longitude
- -77.48
- Latitude
- 38.75
- ICAO
- –
- IATA
- –