Loudoun Valley Estates, VA climate
Loudoun Valley Estates has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 25°, and about 21 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Loudoun Valley Estates feels like
Winter
Spring
Summer
Fall
Loudoun Valley Estates 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° | 25° | 2.9" | 6.9" | 10 | 4 | 26° – 41° |
| February | 46° | 27° | 2.5" | 7.0" | 9 | 5 | 26° – 44° |
| March | 55° | 33° | 3.5" | 3.9" | 11 | 2 | 37° – 53° |
| April | 67° | 44° | 3.3" | 0.1" | 11 | 0 | 51° – 60° |
| May | 75° | 53° | 4.3" | 0 | 13 | 0 | 59° – 70° |
| June | 83° | 62° | 4.3" | 0 | 11 | 0 | 68° – 77° |
| July | 88° | 66° | 4.2" | 0 | 11 | 0 | 72° – 81° |
| August | 86° | 65° | 3.5" | 0 | 9 | 0 | 70° – 79° |
| September | 79° | 58° | 4.1" | 0 | 9 | 0 | 65° – 73° |
| October | 68° | 46° | 3.7" | 0 | 8 | 0 | 53° – 62° |
| November | 56° | 36° | 3.0" | 0.3" | 9 | 0 | 40° – 52° |
| December | 46° | 29° | 3.4" | 2.8" | 10 | 2 | 29° – 48° |
| Year | 66° | 45° | 42.7" | 21.0" | 121 | 14 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Loudoun Valley Estates
Loudoun Valley Estates gets 43 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 121 days a year. Snow covers the ground about 14 days of the year.
About 195 frost-free days a year
In half of years the last 32° night comes by April 13 and the first one by October 26. That leaves about 195 frost-free days for gardens, longer than 69% of U.S. towns.
Heating and cooling a home in Loudoun Valley Estates
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Loudoun Valley Estates, 79% of that work is heating and 21% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Loudoun Valley Estates and its neighbors
Loudoun Valley Estates borders 2 towns with climate data. January nights across them vary by 0.0°. Brambleton has both the coldest January nights (25°) and the hottest July afternoons (88°). Loudoun Valley Estates’s January low is 25° and its July high 88°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Loudoun Valley Estates compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Loudoun Valley Estates averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.0°). The shift is larger than in 85% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Loudoun Valley Estates’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 29° to 48°. September is the most reliable, staying within 8°.
Common questions about Loudoun Valley Estates’s climate
What is the coldest month in Loudoun Valley Estates?
January, with a typical high of 43° and a low of 25°.
What is the hottest month in Loudoun Valley Estates?
July, with a typical high of 88° and a low of 66°. About 32 days a year reach 90°.
How much snow does Loudoun Valley Estates get?
About 21 inches in a normal winter, most of it in February.
When is the first frost in Loudoun Valley Estates?
In half of years the first 32° night comes by October 26, and the last spring frost by April 13.
What is the rainiest month in Loudoun Valley Estates?
May, with 4.3 inches of rain and melted snow. The year totals 43 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Loudoun Valley Estates itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Washington Dc Dulles Airport, VA (4 mi, snow) and Wfo Sterling, VA (1 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.