Burwell-Holland House · Photo: Nyttend · Public domainSummers, winters and rain in Union Hall all run close to those of most U.S. towns
January nights here settle around 27°. Expect the heaviest rain or snow in September and the lightest in February. Winters are mild: January nights here are milder than in 68% of U.S. towns. Tender plants can go out after about April 20; in half of years the first frost comes by October 25.
A year in Union Hall at a glance
Each month’s typical high and low, and what it brings.
What stands out about Union Hall’s climate
Compared with towns across the U.S., with Union Hall’s place in Virginia beside it.
What a year in Union Hall feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 188 frost-free days a year
In half of years the last 32° night comes by April 20 and the first by October 25. Frost and day counts come from NOAA’s station at Rocky Mt, VA, 12 miles from the town’s center, 450 ft higher.
The 2023 USDA map puts Union Hall’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 6°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 6 inches of snow a winter
Snow, measured at Huddleston 4 Sw, VA, falls mostly in February. Precipitation (rain plus melted snow) adds up to 45 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 117 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Union Hall
80% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Rocky Mt, VA.
Living with Union Hall’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
188 frost-free days in zone 7b. The last frost comes by Apr 20 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 25.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 10 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Union Hall from natural hazards, river flooding is the largest share (85%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Union Hall and its neighbors
Every town next door is within a degree of Union Hall in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Union Hall’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Union Hall, VA | 27° | 87° | 45" | 5.9" |
| Bethesda, MD | 26° | 87° | 45" | 5.8" |
| Bloomingdale, TN | 27° | 87° | 45" | 5.1" |
| Ashland, KY | 24° | 87° | 45" | 6.2" |
| Ironton, OH | 24° | 87° | 44" | 6.2" |
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.
Warmer than it used to be
The last 30 years in Union Hall averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 72% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Union Hall compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Union Hall’s place among Virginia’s.
Union Hall weather by month
Highs, lows and precipitation from NOAA’s grid at Union Hall’s center; snow, wet days and snow on the ground from Huddleston 4 Sw, VA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 47° | 27° | 3.5" | 1.5" | 10 | 1 | 30° – 43° |
| February | 51° | 29° | 2.8" | 2.0" | 9 | 2 | 32° – 47° |
| March | 59° | 35° | 3.8" | 1.1" | 11 | 1 | 42° – 56° |
| April | 70° | 44° | 3.8" | 0.1" | 11 | 0 | 52° – 62° |
| May | 77° | 53° | 4.4" | 0.0" | 12 | 0 | 59° – 71° |
| June | 84° | 61° | 4.3" | 0.0" | 11 | 0 | 68° – 77° |
| July | 87° | 66° | 3.8" | 0.0" | 11 | 0 | 72° – 79° |
| August | 85° | 64° | 3.6" | 0.0" | 9 | 0 | 71° – 80° |
| September | 79° | 58° | 4.5" | 0.0" | 8 | 0 | 65° – 74° |
| October | 69° | 45° | 3.5" | 0.0" | 8 | 0 | 54° – 62° |
| November | 59° | 35° | 3.4" | 0.0" | 9 | 0 | 42° – 52° |
| December | 50° | 30° | 3.6" | 1.2" | 10 | 1 | 31° – 50° |
| Year | 68° | 45° | 44.9" | 5.9" | 117 | 4 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 31° to 50°. July is the most reliable, staying within 7°.
Where Union Hall’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Union Hall’s center.
- Snow: Huddleston 4 Sw, VA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Rocky Mt, VA, 12 miles from the town’s center, 450 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Union Hall’s climate
What is the weather like in Union Hall?
A typical July afternoon reaches 87°, a January night drops to 27°, and about 6 inches of snow falls in a normal winter. Milder January nights than 68% of U.S. towns; hotter July afternoons than 63% of U.S. towns.
How cold does it get in Union Hall in winter?
January nights average 27°. About 104 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 30°.
How much snow does Union Hall get?
About 5.9 inches in a normal winter at Huddleston 4 Sw, VA, most of it in February, with snow on the ground about 4 days a year.
How hot does it get in Union Hall?
July, with a typical high of 87° and a low of 66°. About 26 days a year reach 90° (Rocky Mt, VA).
When is the first and last frost in Union Hall?
In half of years the last spring frost (32°) comes by April 20 and the first fall frost by October 25, about 188 frost-free days, at Rocky Mt, VA.
What growing zone is Union Hall in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 6°.
What is the best time of year to visit Union Hall?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Union Hall getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 72% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Union Hall.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.