Photo: Nyttend · Public domainSummer arrives softly in Corsica, cooler than in 91% of U.S. towns
The depth of winter brings overnight lows near 17°. The wettest month is June; the driest is February. In January, nights here are colder than in 77% of U.S. towns. The heating season runs October to April: each of those months averages under 50°.
A year in Corsica at a glance
Each month’s typical high and low, and what it brings.
What stands out about Corsica’s climate
Compared with towns across the U.S., with Corsica’s place in Pennsylvania beside it.
What a year in Corsica feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 143 frost-free days a year
In half of years the last 32° night comes by May 13 and the first by October 7. Frost and day counts come from NOAA’s station at Cooksburg 2 Nw, PA, 12 miles from the town’s center, 150 ft lower.
The 2023 USDA map puts Corsica’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −7°. 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 35 inches of snow a winter
Snow, measured at Putneyville 2 Se Dam, PA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 46 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 149 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Corsica
96% 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 Cooksburg 2 Nw, PA.
Living with Corsica’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
143 frost-free days in zone 6a. The last frost comes by May 13 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 7.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September.
Parks & trails →Of the yearly building losses FEMA expects in Corsica from natural hazards, river flooding is the largest share (76%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Corsica and its neighbors
Every town next door is within a degree of Corsica in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Corsica’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 |
|---|---|---|---|---|
| Corsica, PA | 17° | 80° | 46" | 35" |
| Durham, NH | 16° | 81° | 47" | 39" |
| Deerpark, NY | 16° | 81° | 49" | 43" |
| Beverly, MA | 20° | 80° | 48" | 39" |
| Tolland, CT | 17° | 82° | 49" | 39" |
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 Corsica averaged 1.5° warmer than the 1900s. The biggest change is in December (+2.7°).
A bigger shift than in 58% 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 Corsica compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Corsica’s place among Pennsylvania’s.
Corsica weather by month
Highs, lows and precipitation from NOAA’s grid at Corsica’s center; snow, wet days and snow on the ground from Putneyville 2 Se Dam, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 33° | 17° | 3.4" | 12.4" | 15 | 16° – 35° |
| February | 36° | 18° | 2.6" | 5.1" | 12 | 13° – 36° |
| March | 46° | 25° | 3.5" | 5.9" | 13 | 30° – 47° |
| April | 59° | 35° | 4.0" | 0.3" | 14 | 41° – 53° |
| May | 69° | 44° | 4.0" | 0.0" | 14 | 49° – 64° |
| June | 77° | 53° | 4.9" | 0.0" | 13 | 61° – 67° |
| July | 80° | 57° | 4.8" | 0.0" | 12 | 64° – 73° |
| August | 79° | 56° | 4.0" | 0.0" | 11 | 63° – 72° |
| September | 73° | 49° | 4.1" | 0.0" | 10 | 58° – 66° |
| October | 61° | 39° | 3.7" | 0.0" | 11 | 45° – 56° |
| November | 48° | 31° | 3.6" | 1.7" | 12 | 34° – 45° |
| December | 37° | 23° | 3.5" | 9.1" | 14 | 20° – 41° |
| Year | 58° | 37° | 46.3" | 34.5" | 149 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 13° to 36°. June is the most reliable, staying within 7°.
Where Corsica’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 Corsica’s center.
- Snow: Putneyville 2 Se Dam, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Cooksburg 2 Nw, PA, 12 miles from the town’s center, 150 ft lower; 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 Corsica’s climate
What is the weather like in Corsica?
A typical July afternoon reaches 80°, a January night drops to 17°, and about 35 inches of snow falls in a normal winter. Colder January nights than 77% of U.S. towns; cooler July afternoons than 91% of U.S. towns.
How cold does it get in Corsica in winter?
January nights average 17°. About 166 nights a year reach 32° or below and 11 reach 0° or below. In the coldest January of the last 30 years the month averaged 16°.
How much snow does Corsica get?
About 35 inches in a normal winter at Putneyville 2 Se Dam, PA, most of it in January.
How hot does it get in Corsica?
July, with a typical high of 80° and a low of 57°. About 2 days a year reach 90° (Cooksburg 2 Nw, PA).
When is the first and last frost in Corsica?
In half of years the last spring frost (32°) comes by May 13 and the first fall frost by October 7, about 143 frost-free days, at Cooksburg 2 Nw, PA.
What growing zone is Corsica in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −7°.
What is the best time of year to visit Corsica?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Corsica getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 58% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Corsica.
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.