Valley Forge, TN climate
Valley Forge has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 86°, a January night drops to 26°, and about 6 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Valley Forge feels like
Winter
Spring
Summer
Fall
Valley Forge 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 | 47° | 26° | 4.0" | 1.9" | 13 | 3 | 29° – 43° |
| February | 51° | 29° | 3.8" | 2.1" | 12 | 1 | 30° – 49° |
| March | 59° | 35° | 4.1" | 0.1" | 13 | 0 | 38° – 57° |
| April | 69° | 42° | 4.3" | 0 | 12 | 0 | 50° – 60° |
| May | 76° | 50° | 4.8" | 0 | 13 | 0 | 57° – 68° |
| June | 83° | 59° | 4.6" | 0 | 13 | 0 | 67° – 74° |
| July | 86° | 62° | 5.4" | 0 | 14 | 0 | 70° – 77° |
| August | 85° | 62° | 4.3" | 0 | 12 | 0 | 70° – 78° |
| September | 80° | 55° | 3.3" | 0 | 9 | 0 | 64° – 73° |
| October | 70° | 44° | 3.1" | 0 | 9 | 0 | 53° – 62° |
| November | 59° | 34° | 3.4" | 0.1" | 10 | 0 | 39° – 51° |
| December | 49° | 29° | 4.0" | 1.8" | 13 | 1 | 28° – 50° |
| Year | 68° | 44° | 49.0" | 6.0" | 142 | 6 |
“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 Valley Forge
Valley Forge gets 49 inches of rain and melted snow a year. July is the wettest month and October the driest. Rain or snow falls on about 142 days a year. Snow covers the ground about 6 days of the year.
About 187 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 24. That leaves about 187 frost-free days for gardens, longer than 60% of U.S. towns.
Heating and cooling a home in Valley Forge
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Valley Forge, 81% of that work is heating and 19% is cooling, so the furnace matters far more than the air conditioner.
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.
Valley Forge and its neighbors
Valley Forge borders 2 towns with climate data. January nights across them vary by 0.4°. Hampton has the coldest January nights (26°) and Elizabethton the hottest July afternoons (86°). Valley Forge’s January low is 26° and its July high 86°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Valley Forge 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 Valley Forge averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 63% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Valley Forge’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 28° to 50°. June is the most reliable, staying within 7°.
Common questions about Valley Forge’s climate
What is the coldest month in Valley Forge?
January, with a typical high of 47° and a low of 26°.
What is the hottest month in Valley Forge?
July, with a typical high of 86° and a low of 62°. About 18 days a year reach 90°.
How much snow does Valley Forge get?
About 6 inches in a normal winter, most of it in February.
When is the first frost in Valley Forge?
In half of years the first 32° night comes by October 24, and the last spring frost by April 19.
What is the rainiest month in Valley Forge?
July, with 5.4 inches of rain and melted snow. The year totals 49 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Valley Forge itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Elizabethton, TN (5 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.