Guys Mills gets about 89 inches of snow a winter, more than 96% of U.S. towns
In July the day’s top temperature is typically 80°. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 63° apart. Summers stay cool: July afternoons here are cooler than in 90% of U.S. towns. Seedlings are safe outdoors from about May 12, with the first autumn frost due around October 10.
A year in Guys Mills at a glance
Each month’s typical high and low, and what it brings.
What stands out about Guys Mills’ climate
Compared with towns across the U.S., with Guys Mills’ place in Pennsylvania beside it.
What a year in Guys Mills feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 149 frost-free days a year
In half of years the last 32° night comes by May 12 and the first by October 10. Frost and day counts come from NOAA’s station at Titusville Wtr Wks, PA, 15 miles from the town’s center, 220 ft lower.
The 2023 USDA map puts Guys Mills’ center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −6°. 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 89 inches of snow a winter
Snow, measured at Titusville Wtr Wks, PA, falls mostly in January and December. 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 166 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Guys 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 Titusville Wtr Wks, PA.
Living with Guys Mills’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
149 frost-free days in zone 6a. The last frost comes by May 12 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 10.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Guys Mills from natural hazards, river flooding is the largest share (74%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Guys Mills and similar climates
TownRatings has no climate map of the towns around Guys Mills yet.
Climates most like Guys 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 |
|---|---|---|---|---|
| Guys Mills, PA | 17° | 80° | 46" | 89" |
| Chenango, NY | 15° | 81° | 43" | 87" |
| Cumberland, ME | 13° | 80° | 49" | 84" |
| Lenox, MA | 14° | 81° | 46" | 77" |
| Rindge, NH | 13° | 80° | 48" | 73" |
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 Guys Mills averaged 1.8° warmer than the 1900s. The biggest change is in December (+2.9°).
A bigger shift than in 78% 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 Guys Mills compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Guys Mills’ place among Pennsylvania’s.
Guys Mills weather by month
Highs, lows and precipitation from NOAA’s grid at Guys Mills’ center; snow, wet days and snow on the ground from Titusville Wtr Wks, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 17° | 3.5" | 24.3" | 19 | 24 | 16° – 35° |
| February | 35° | 18° | 2.7" | 18.5" | 15 | 22 | 12° – 36° |
| March | 44° | 25° | 3.5" | 12.5" | 14 | 13 | 27° – 47° |
| April | 58° | 35° | 4.0" | 2.8" | 15 | 2 | 41° – 52° |
| May | 69° | 45° | 4.0" | 0.0" | 13 | 0 | 50° – 64° |
| June | 77° | 54° | 4.9" | 0.0" | 13 | 0 | 60° – 69° |
| July | 80° | 58° | 4.3" | 0.0" | 11 | 0 | 65° – 73° |
| August | 79° | 57° | 3.9" | 0.0" | 11 | 0 | 63° – 72° |
| September | 72° | 51° | 4.1" | 0.0" | 10 | 0 | 58° – 66° |
| October | 60° | 41° | 4.2" | 0.8" | 14 | 0 | 47° – 57° |
| November | 47° | 32° | 3.5" | 8.5" | 14 | 6 | 33° – 46° |
| December | 37° | 23° | 3.7" | 22.0" | 17 | 18 | 20° – 41° |
| Year | 58° | 38° | 46.2" | 89.4" | 166 | 84 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 12° to 36°. September is the most reliable, staying within 8°.
Where Guys 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 Guys Mills’ center.
- Snow: Titusville Wtr Wks, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Titusville Wtr Wks, PA, 15 miles from the town’s center, 220 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 Guys Mills’ climate
What is the weather like in Guys Mills?
A typical July afternoon reaches 80°, a January night drops to 17°, and about 89 inches of snow falls in a normal winter. Colder January nights than 75% of U.S. towns; cooler July afternoons than 90% of U.S. towns.
How cold does it get in Guys Mills in winter?
January nights average 17°. About 161 nights a year reach 32° or below and 12 reach 0° or below. In the coldest January of the last 30 years the month averaged 16°.
How much snow does Guys Mills get?
About 89 inches in a normal winter at Titusville Wtr Wks, PA, most of it in January and December, with snow on the ground about 84 days a year.
How hot does it get in Guys Mills?
July, with a typical high of 80° and a low of 58°. About 4 days a year reach 90° (Titusville Wtr Wks, PA).
When is the first and last frost in Guys Mills?
In half of years the last spring frost (32°) comes by May 12 and the first fall frost by October 10, about 149 frost-free days, at Titusville Wtr Wks, PA.
What growing zone is Guys Mills in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −6°.
What is the best time of year to visit Guys 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 Guys Mills getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 78% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Guys 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.