Photo: White Feather Safari Inspecting Life · CC BY 2.0July in Osceola Mills stays fresher than in 85% of U.S. towns
January nights here settle around 18°. Winter nights are cold: in January they are colder than in 71% of U.S. towns. The latest 30-year average runs 0.9° warmer than 1901–2000’s, with February up the most. The frost-free window for a garden runs roughly May 13 to October 1.
A year in Osceola Mills at a glance
Each month’s typical high and low, and what it brings.
What stands out about Osceola Mills’ climate
Compared with towns across the U.S., with Osceola Mills’ place in Pennsylvania beside it.
What a year in Osceola Mills feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 142 frost-free days a year
In half of years the last 32° night comes by May 13 and the first by October 1. Frost and day counts come from NOAA’s station at Philipsburg 2 S, PA, 3 miles from the town’s center, 240 ft higher.
The 2023 USDA map puts Osceola Mills’ center in zone 6a: 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 50 inches of snow a winter
Snow, measured at Philipsburg 2 S, PA, is heaviest from January through February, about 13 inches a month. 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 159 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Osceola Mills
95% 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 Philipsburg 2 S, PA.
Living with Osceola Mills’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
142 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 1.
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 Osceola Mills from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Osceola Mills and its neighbors
Rush Township has the coldest January nights next door (16°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Osceola Mills’, 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 |
|---|---|---|---|---|
| Osceola Mills, PA | 18° | 81° | 43" | 50" |
| Ontario, OH | 17° | 82° | 42" | 49" |
| Fenton, NY | 15° | 82° | 43" | 48" |
| Great Barrington, MA | 14° | 82° | 45" | 50" |
| South Hooksett, NH | 14° | 83° | 45" | 53" |
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 Osceola Mills averaged 0.9° warmer than the 1900s. The biggest change is in February (+2.1°).
A smaller shift than in 82% 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 Osceola Mills compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Osceola Mills’ place among Pennsylvania’s.
Osceola Mills weather by month
Highs, lows and precipitation from NOAA’s grid at Osceola Mills’ center; snow, wet days and snow on the ground from Philipsburg 2 S, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 34° | 18° | 2.9" | 13.1" | 16 | 21 | 17° – 34° |
| February | 37° | 19° | 2.5" | 12.7" | 13 | 18 | 17° – 36° |
| March | 46° | 26° | 3.4" | 9.1" | 13 | 11 | 30° – 47° |
| April | 60° | 36° | 3.8" | 2.0" | 15 | 1 | 41° – 52° |
| May | 70° | 45° | 3.9" | 0.1" | 15 | 0 | 51° – 64° |
| June | 78° | 54° | 4.3" | 0.0" | 14 | 0 | 62° – 69° |
| July | 81° | 58° | 4.1" | 0.0" | 12 | 0 | 65° – 73° |
| August | 80° | 57° | 3.9" | 0.0" | 12 | 0 | 64° – 73° |
| September | 73° | 50° | 4.1" | 0.0" | 10 | 0 | 59° – 66° |
| October | 61° | 39° | 3.5" | 0.8" | 13 | 1 | 46° – 57° |
| November | 49° | 31° | 3.2" | 2.6" | 11 | 3 | 34° – 45° |
| December | 38° | 24° | 3.2" | 9.6" | 15 | 14 | 21° – 42° |
| Year | 59° | 38° | 42.9" | 50.0" | 159 | 68 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 21° to 42°. June is the most reliable, staying within 7°.
Where Osceola Mills’ 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 Osceola Mills’ center.
- Snow: Philipsburg 2 S, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Philipsburg 2 S, PA, 3 miles from the town’s center, 240 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 Osceola Mills’ climate
What is the weather like in Osceola Mills?
A typical July afternoon reaches 81°, a January night drops to 18°, and about 50 inches of snow falls in a normal winter. Colder January nights than 71% of U.S. towns; cooler July afternoons than 85% of U.S. towns.
How cold does it get in Osceola Mills in winter?
January nights average 18°. About 145 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 17°.
How much snow does Osceola Mills get?
About 50 inches in a normal winter at Philipsburg 2 S, PA, heaviest from January through February, about 13 inches a month, with snow on the ground about 68 days a year.
How hot does it get in Osceola Mills?
July, with a typical high of 81° and a low of 58°. About 4 days a year reach 90° (Philipsburg 2 S, PA).
When is the first and last frost in Osceola Mills?
In half of years the last spring frost (32°) comes by May 13 and the first fall frost by October 1, about 142 frost-free days, at Philipsburg 2 S, PA.
What growing zone is Osceola Mills in?
Zone 6a 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 Osceola Mills?
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 Osceola Mills getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 82% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Osceola Mills.
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.