Brooks-Brown House · Photo: Nyttend · Public domainNo extremes in Penhook: its weather tracks the middle of U.S. towns
Peak summer warmth arrives in July, with afternoons near 87°. The gap between a January night and a July afternoon is 60°. Winters are mild: January nights here are milder than in 67% of U.S. towns. Keep the boiler serviced for the months from November to March, which average under 50°.
A year in Penhook at a glance
Each month’s typical high and low, and what it brings.
What stands out about Penhook’s climate
Compared with towns across the U.S., with Penhook’s place in Virginia beside it.
What a year in Penhook 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, 14 miles from the town’s center, 450 ft higher.
The 2023 USDA map puts Penhook’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 Penhook
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 Penhook’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. 15 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Penhook 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 →Penhook and its neighbors
Every town next door is within a degree of Penhook in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Penhook’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 |
|---|---|---|---|---|
| Penhook, VA | 27° | 87° | 45" | 5.9" |
| Chevy Chase, MD | 26° | 87° | 45" | 5.8" |
| Bloomingdale, TN | 27° | 87° | 45" | 5.1" |
| Ashland, KY | 24° | 87° | 45" | 6.2" |
| Penn Wynne, PA | 25° | 87° | 47" | 7.6" |
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 Penhook averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 76% 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 Penhook compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Penhook’s place among Virginia’s.
Penhook weather by month
Highs, lows and precipitation from NOAA’s grid at Penhook’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° | 3.6" | 1.5" | 10 | 1 | 30° – 43° |
| February | 51° | 29° | 2.8" | 2.0" | 9 | 2 | 32° – 47° |
| March | 59° | 35° | 3.9" | 1.1" | 11 | 1 | 41° – 56° |
| April | 70° | 44° | 3.8" | 0.1" | 11 | 0 | 52° – 61° |
| 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° | 3.7" | 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° | 3.3" | 0.0" | 9 | 0 | 42° – 52° |
| December | 50° | 30° | 3.6" | 1.2" | 10 | 1 | 31° – 50° |
| Year | 68° | 45° | 45.2" | 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 Penhook’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 Penhook’s center.
- Snow: Huddleston 4 Sw, VA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Rocky Mt, VA, 14 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 Penhook’s climate
What is the weather like in Penhook?
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 67% of U.S. towns; hotter July afternoons than 63% of U.S. towns.
How cold does it get in Penhook 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 Penhook 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 Penhook?
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 Penhook?
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 Penhook 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 Penhook?
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 Penhook getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 76% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Penhook.
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.