Photo: Nyttend · Public domainNo extremes in Washington Court House: its weather tracks the middle of U.S. towns
Peak summer warmth arrives in July, with afternoons near 84°. Precipitation peaks in June and eases off in February. Summers stay cool: July afternoons here are cooler than in 60% of U.S. towns. Seedlings are safe outdoors from about April 23, with the first autumn frost due around October 21.
A year in Washington Court House at a glance
Each month’s typical high and low, and what it brings.
What stands out about Washington Court House’s climate
Compared with towns across the U.S., with Washington Court House’s place in Ohio beside it.
What a year in Washington Court House feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 181 frost-free days a year
In half of years the last 32° night comes by April 23 and the first by October 21. Frost and day counts come from NOAA’s station at Washington Court House, OH, 0.2 miles from the town’s center, at about the same height.
The 2023 USDA map puts Washington Court House’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −4°. 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 18 inches of snow a winter
Snow, measured at Washington Court House, OH, falls mostly in January. Precipitation (rain plus melted snow) adds up to 42 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 130 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Washington Court House
87% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Washington Court House, OH.
Living with Washington Court House’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
181 frost-free days in zone 6b. The last frost comes by Apr 23 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 21.
Months with highs of 62–84° and lows of 40° or more: April, May, June, July, August, September and October. 1.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Washington Court House from natural hazards, river flooding is the largest share (61%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Washington Court House and its neighbors
Every town next door is within a degree of Washington Court House in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Washington Court House’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 |
|---|---|---|---|---|
| Washington Court House, OH | 21° | 84° | 42" | 18" |
| Allison Park, PA | 21° | 84° | 41" | 20" |
| Brownsburg, IN | 19° | 84° | 43" | 17" |
| Paris, IL | 20° | 85° | 43" | 19" |
| Wytheville, VA | 24° | 83° | 42" | 18" |
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 Washington Court House averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.7°).
A smaller shift than in 56% 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 Washington Court House compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Washington Court House’s place among Ohio’s.
Washington Court House weather by month
Highs, lows and precipitation from NOAA’s grid at Washington Court House’s center; snow, wet days and snow on the ground from Washington Court House, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 37° | 21° | 3.1" | 7.9" | 12 | 10 | 20° – 40° |
| February | 41° | 23° | 2.6" | 3.7" | 10 | 5 | 18° – 40° |
| March | 51° | 31° | 3.7" | 2.8" | 12 | 3 | 35° – 53° |
| April | 64° | 41° | 4.2" | 0.3" | 13 | 0 | 45° – 57° |
| May | 73° | 51° | 4.5" | 0.0" | 13 | 0 | 56° – 69° |
| June | 81° | 60° | 4.5" | 0.0" | 12 | 0 | 66° – 73° |
| July | 84° | 63° | 4.1" | 0.0" | 11 | 0 | 69° – 78° |
| August | 83° | 61° | 3.1" | 0.0" | 8 | 0 | 68° – 77° |
| September | 78° | 54° | 2.9" | 0.0" | 8 | 0 | 62° – 71° |
| October | 65° | 43° | 2.9" | 0.2" | 10 | 0 | 51° – 60° |
| November | 52° | 33° | 2.9" | 0.7" | 11 | 1 | 36° – 48° |
| December | 41° | 26° | 3.1" | 2.7" | 11 | 3 | 22° – 44° |
| Year | 62° | 42° | 41.5" | 18.3" | 130 | 21 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 22° to 44°. June is the most reliable, staying within 8°.
Where Washington Court House’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 Washington Court House’s center.
- Snow: Washington Court House, OH (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Washington Court House, OH, 0.2 miles from the town’s center, at about the same height; 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 Washington Court House’s climate
What is the weather like in Washington Court House?
A typical July afternoon reaches 84°, a January night drops to 21°, and about 18 inches of snow falls in a normal winter. Colder January nights than 55% of U.S. towns; cooler July afternoons than 60% of U.S. towns.
How cold does it get in Washington Court House in winter?
January nights average 21°. About 115 nights a year reach 32° or below and 4 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Washington Court House get?
About 18 inches in a normal winter at Washington Court House, OH, most of it in January, with snow on the ground about 21 days a year.
How hot does it get in Washington Court House?
July, with a typical high of 84° and a low of 63°. About 12 days a year reach 90° (Washington Court House, OH).
When is the first and last frost in Washington Court House?
In half of years the last spring frost (32°) comes by April 23 and the first fall frost by October 21, about 181 frost-free days, at Washington Court House, OH.
What growing zone is Washington Court House in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −4°.
What is the best time of year to visit Washington Court House?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Washington Court House getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 56% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Washington Court House.
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.