Jamestown Opera House · Photo: Nyttend · Public domainNeither notably warm, cold, wet nor dry, Jamestown sits near the middle of U.S. towns
Deep winter brings January lows near 21°. Seasons differ by 63°, from the coldest nights to the warmest afternoons. Its July afternoons stay fresher than in 66% of U.S. towns. The frost-free window for a garden runs roughly April 18 to October 24.
A year in Jamestown at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jamestown’s climate
Compared with towns across the U.S., with Jamestown’s place in Ohio beside it.
What a year in Jamestown 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 18 and the first by October 24. Frost and day counts come from NOAA’s station at Xenia 6 Sse, OH, 10 miles from the town’s center, at about the same height.
The 2023 USDA map puts Jamestown’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −5°. 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 20 inches of snow a winter
Snow, measured at Xenia 6 Sse, OH, falls mostly in January. Precipitation (rain plus melted snow) adds up to 43 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 107 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Jamestown
84% of the work is heating. 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 Xenia 6 Sse, OH.
Living with Jamestown’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
188 frost-free days in zone 6b. The last frost comes by Apr 18 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 24.
Months with highs of 62–84° and lows of 40° or more: April, May, June, July, August, September and October. 0.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Jamestown from natural hazards, river flooding is the largest share (50%); heat waves, cold waves, winter storms and ice storms together are 26%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Jamestown and similar climates
TownRatings has no climate map of the towns around Jamestown yet.
Climates most like Jamestown’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 |
|---|---|---|---|---|
| Jamestown, OH | 21° | 83° | 43" | 20" |
| West Mifflin, PA | 22° | 84° | 42" | 21" |
| Frankfort, IN | 18° | 84° | 43" | 24" |
| Wytheville, VA | 24° | 83° | 42" | 18" |
| Wheeling, WV | 22° | 84° | 42" | 15" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Jamestown 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 Jamestown compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Jamestown’s place among Ohio’s.
Jamestown weather by month
Highs, lows and precipitation from NOAA’s grid at Jamestown’s center; snow, wet days and snow on the ground from Xenia 6 Sse, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 36° | 21° | 3.1" | 7.3" | 10 | 20° – 40° |
| February | 40° | 23° | 2.6" | 5.3" | 8 | 18° – 41° |
| March | 50° | 31° | 3.6" | 2.6" | 9 | 34° – 53° |
| April | 63° | 41° | 4.3" | 0.5" | 11 | 45° – 57° |
| May | 73° | 51° | 4.5" | 0.0" | 11 | 56° – 69° |
| June | 81° | 60° | 4.7" | 0.0" | 10 | 66° – 73° |
| July | 83° | 63° | 4.4" | 0.0" | 9 | 68° – 78° |
| August | 82° | 61° | 3.3" | 0.0" | 7 | 68° – 77° |
| September | 77° | 54° | 3.1" | 0.0" | 6 | 62° – 71° |
| October | 65° | 43° | 3.0" | 0.1" | 8 | 51° – 60° |
| November | 52° | 34° | 3.0" | 0.7" | 8 | 36° – 49° |
| December | 41° | 26° | 3.2" | 3.8" | 9 | 21° – 44° |
| Year | 62° | 42° | 42.8" | 20.3" | 107 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 18° to 41°. June is the most reliable, staying within 7°.
Where Jamestown’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 Jamestown’s center.
- Snow: Xenia 6 Sse, OH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Xenia 6 Sse, OH, 10 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 Jamestown’s climate
What is the weather like in Jamestown?
A typical July afternoon reaches 83°, a January night drops to 21°, and about 20 inches of snow falls in a normal winter. Colder January nights than 55% of U.S. towns; cooler July afternoons than 66% of U.S. towns.
How cold does it get in Jamestown in winter?
January nights average 21°. About 104 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Jamestown get?
About 20 inches in a normal winter at Xenia 6 Sse, OH, most of it in January.
How hot does it get in Jamestown?
July, with a typical high of 83° and a low of 63°. About 9 days a year reach 90° (Xenia 6 Sse, OH).
When is the first and last frost in Jamestown?
In half of years the last spring frost (32°) comes by April 18 and the first fall frost by October 24, about 188 frost-free days, at Xenia 6 Sse, OH.
What growing zone is Jamestown in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −5°.
What is the best time of year to visit Jamestown?
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 Jamestown 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 Jamestown.
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.