Photo: Adegroff · CC BY-SA 4.0July in Grove City stays fresher than in 75% of U.S. towns
Nights in January average 18°. Its January nights bite harder than in 68% of U.S. towns. The latest 30-year average runs 1.6° warmer than 1901–2000’s, with December up the most. Homes need heating from November to April, the months averaging under 50°.
A year in Grove City at a glance
Each month’s typical high and low, and what it brings.
What stands out about Grove City’s climate
Compared with towns across the U.S., with Grove City’s place in Pennsylvania beside it.
What a year in Grove City feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 158 frost-free days a year
In half of years the last 32° night comes by May 7 and the first by October 14. Frost and day counts come from NOAA’s station at Slippery Rock 1 Ssw, PA, 7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Grove City’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 54 inches of snow a winter
Snow, measured at Franklin, PA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 44 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 170 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Grove City
94% 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 Slippery Rock 1 Ssw, PA.
Living with Grove City’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
158 frost-free days in zone 6a. The last frost comes by May 7 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 14.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 8.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Grove City from natural hazards, river flooding is the largest share (83%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Grove City and its neighbors
Every town next door is within a degree of Grove City in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Grove City’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 |
|---|---|---|---|---|
| Grove City, PA | 18° | 83° | 44" | 54" |
| Plattekill, NY | 17° | 83° | 45" | 59" |
| Haverhill, MA | 17° | 83° | 46" | 58" |
| Ellington, CT | 18° | 83° | 48" | 52" |
| Atkinson, NH | 16° | 83° | 46" | 58" |
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 Grove City averaged 1.6° warmer than the 1900s. The biggest change is in December (+2.7°).
A bigger shift than in 65% 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 Grove City compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Grove City’s place among Pennsylvania’s.
Grove City weather by month
Highs, lows and precipitation from NOAA’s grid at Grove City’s center; snow, wet days and snow on the ground from Franklin, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 34° | 18° | 3.1" | 17.9" | 18 | 19 | 18° – 36° |
| February | 38° | 20° | 2.5" | 11.5" | 15 | 16 | 14° – 38° |
| March | 47° | 27° | 3.3" | 8.9" | 14 | 8 | 31° – 49° |
| April | 61° | 36° | 4.0" | 1.1" | 14 | 1 | 42° – 53° |
| May | 71° | 46° | 4.0" | 0.0" | 15 | 0 | 51° – 65° |
| June | 79° | 55° | 4.7" | 0.0" | 14 | 0 | 63° – 70° |
| July | 83° | 59° | 4.7" | 0.0" | 12 | 0 | 66° – 75° |
| August | 81° | 58° | 3.9" | 0.0" | 12 | 0 | 65° – 74° |
| September | 75° | 51° | 4.0" | 0.0" | 11 | 0 | 60° – 68° |
| October | 63° | 41° | 3.4" | 0.0" | 15 | 0 | 48° – 58° |
| November | 50° | 32° | 3.2" | 2.6" | 14 | 2 | 35° – 46° |
| December | 39° | 24° | 3.3" | 11.7" | 17 | 10 | 21° – 42° |
| Year | 60° | 39° | 44.1" | 53.7" | 170 | 56 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 14° to 38°. June is the most reliable, staying within 7°.
Where Grove City’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 Grove City’s center.
- Snow: Franklin, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Slippery Rock 1 Ssw, PA, 7 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 Grove City’s climate
What is the weather like in Grove City?
A typical July afternoon reaches 83°, a January night drops to 18°, and about 54 inches of snow falls in a normal winter. Colder January nights than 68% of U.S. towns; cooler July afternoons than 75% of U.S. towns.
How cold does it get in Grove City in winter?
January nights average 18°. About 142 nights a year reach 32° or below and 6 reach 0° or below. In the coldest January of the last 30 years the month averaged 18°.
How much snow does Grove City get?
About 54 inches in a normal winter at Franklin, PA, most of it in January, with snow on the ground about 56 days a year.
How hot does it get in Grove City?
July, with a typical high of 83° and a low of 59°. About 13 days a year reach 90° (Slippery Rock 1 Ssw, PA).
When is the first and last frost in Grove City?
In half of years the last spring frost (32°) comes by May 7 and the first fall frost by October 14, about 158 frost-free days, at Slippery Rock 1 Ssw, PA.
What growing zone is Grove City 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 Grove City?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Grove City getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 65% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Grove City.
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.