Manassas Park has chilly winters and warm summers
A typical July afternoon reaches 88°, a January night drops to 26°, and about 21 inches of snow falls in a normal winter.
A year in Manassas Park at a glance
Each month’s typical high and low, and what it brings.
What stands out about Manassas Park’s climate
Read from where Manassas Park sits among Virginia’s towns. The page puts what stands out first.
Warmer than it used to be
The last 30 years in Manassas Park averaged 1.8° warmer than the 1900s. The biggest change is in December (+2.9°).
A bigger shift than in 86% of U.S. towns.
Change by month
21 inches of snow, 42 of rain and melt
July is the wettest month and February the driest. Rain or snow falls on about 121 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
What a year in Manassas Park feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 197 frost-free days a year
In half of years the last 32° night comes by April 12 and the first by October 27.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Manassas Park’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
197 frost-free days. The last frost comes by Apr 12 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 27.
About 21" a winter over 5 days with an inch or more, most in February. Snow covers the ground about 14 days a year.
Months averaging under 55° run from November through March. Heating is 79% of the year’s heating-and-cooling load.
About 41 days a year reach 90°, and July afternoons average 88°.
The nicest months are April, May, June, September and October. 3.8 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Manassas Park and its neighbors
Loch Lomond has the coldest January nights next door (26°) and Buckhall the hottest July afternoons (88°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
How Manassas Park compares
Against every U.S. town on TownTapestry, each counted once, with its place in Virginia.
Manassas Park weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 43° | 26° | 2.9" | 6.9" | 10 | 4 | 27° – 42° |
| February | 47° | 28° | 2.5" | 7.0" | 9 | 5 | 27° – 45° |
| March | 56° | 34° | 3.4" | 3.9" | 11 | 2 | 39° – 55° |
| April | 67° | 44° | 3.2" | 0.1" | 11 | 0 | 51° – 61° |
| May | 75° | 53° | 4.1" | 0 | 13 | 0 | 60° – 70° |
| June | 84° | 62° | 4.0" | 0 | 11 | 0 | 69° – 77° |
| July | 88° | 68° | 4.3" | 0 | 11 | 0 | 73° – 81° |
| August | 86° | 66° | 3.5" | 0 | 9 | 0 | 71° – 80° |
| September | 79° | 59° | 4.1" | 0 | 9 | 0 | 66° – 73° |
| October | 68° | 47° | 3.7" | 0 | 8 | 0 | 53° – 63° |
| November | 57° | 36° | 3.0" | 0.3" | 9 | 0 | 41° – 52° |
| December | 47° | 30° | 3.4" | 2.8" | 10 | 2 | 29° – 50° |
| Year | 66° | 46° | 42.1" | 21.0" | 121 | 14 |
Heating and cooling a home in Manassas Park
79% of the work is heating.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 29° to 50°. September is the most reliable, staying within 8°.
Common questions about Manassas Park’s climate
What is the coldest month in Manassas Park?
January, with a typical high of 43° and a low of 26°.
What is the hottest month in Manassas Park?
July, with a typical high of 88° and a low of 68°. About 41 days a year reach 90°.
How much snow does Manassas Park get?
About 21 inches in a normal winter, most of it in February.
When is the first frost in Manassas Park?
In half of years the first 32° night comes by October 27, and the last spring frost by April 12.
What is the rainiest month in Manassas Park?
July, with 4.3 inches of rain and melted snow. The year totals 42 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Manassas Park.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Manassas Park itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Washington Dc Dulles Airport, VA (12 mi, snow) and Manassas, VA (4 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.