Photo: Shuvaev · CC BY-SA 4.0Weather without surprises: Heidelberg Township keeps close to the norm for U.S. towns
In July the day’s top temperature is typically 85°. By precipitation alone, it ranks wetter than 67% of U.S. towns. Since 1901–2000, the year has warmed by 1.7°, most of all in December. Picnics, hikes and garden evenings come into their own from May to June and August to October, with highs of 65–83°.
A year in Heidelberg Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Heidelberg Township’s climate
Compared with towns across the U.S., with Heidelberg Township’s place in Pennsylvania beside it.
What a year in Heidelberg Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 176 frost-free days a year
In half of years the last 32° night comes by April 26 and the first by October 19. Frost and day counts come from NOAA’s station at Blue Marsh Lake, PA, 7 miles from the town’s center, 120 ft lower.
The 2023 USDA map puts Heidelberg Township’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 3°. 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 30 inches of snow a winter
Snow, measured at Strausstown, PA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 46 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 84 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Heidelberg Township
87% 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 Blue Marsh Lake, PA.
Living with Heidelberg Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
176 frost-free days in zone 7a. The last frost comes by Apr 26 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 19.
Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 5.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Heidelberg Township from natural hazards, river flooding is the largest share (58%); heat waves, cold waves, winter storms and ice storms together are 12%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Heidelberg Township and its neighbors
Every town next door is within a degree of Heidelberg Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Heidelberg Township’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 |
|---|---|---|---|---|
| Heidelberg Township, PA | 21° | 85° | 46" | 30" |
| New Martinsville, WV | 22° | 85° | 46" | 27" |
| North Haven, CT | 20° | 84° | 48" | 34" |
| Cumberland, IN | 20° | 85° | 44" | 27" |
| Hebron, KY | 23° | 85° | 46" | 23" |
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 Heidelberg Township averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.2°).
A bigger shift than in 72% 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 Heidelberg Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Heidelberg Township’s place among Pennsylvania’s.
Heidelberg Township weather by month
Highs, lows and precipitation from NOAA’s grid at Heidelberg Township’s center; snow, wet days and snow on the ground from Strausstown, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 38° | 21° | 3.2" | 11.3" | 8 | 20° – 37° |
| February | 41° | 23° | 2.5" | 8.7" | 5 | 20° – 40° |
| March | 50° | 30° | 3.7" | 5.3" | 7 | 33° – 49° |
| April | 63° | 39° | 3.7" | 0.4" | 8 | 47° – 56° |
| May | 72° | 50° | 3.8" | 0.0" | 8 | 56° – 67° |
| June | 81° | 59° | 4.6" | 0.0" | 8 | 66° – 73° |
| July | 85° | 64° | 4.7" | 0.0" | 8 | 70° – 78° |
| August | 83° | 62° | 4.5" | 0.0" | 7 | 68° – 76° |
| September | 77° | 55° | 4.7" | 0.0" | 7 | 63° – 69° |
| October | 65° | 43° | 4.1" | 0.0" | 7 | 48° – 61° |
| November | 53° | 34° | 3.2" | 0.9" | 6 | 38° – 48° |
| December | 43° | 26° | 3.7" | 3.6" | 7 | 26° – 45° |
| Year | 62° | 42° | 46.4" | 30.2" | 84 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 26° to 45°. September is the most reliable, staying within 7°.
Where Heidelberg Township’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 Heidelberg Township’s center.
- Snow: Strausstown, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Blue Marsh Lake, PA, 7 miles from the town’s center, 120 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 Heidelberg Township’s climate
What is the weather like in Heidelberg Township?
A typical July afternoon reaches 85°, a January night drops to 21°, and about 30 inches of snow falls in a normal winter. Colder January nights than 53% of U.S. towns; cooler July afternoons than 50% of U.S. towns.
How cold does it get in Heidelberg Township in winter?
January nights average 21°. About 125 nights a year reach 32° or below and 2 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Heidelberg Township get?
About 30 inches in a normal winter at Strausstown, PA, most of it in January.
How hot does it get in Heidelberg Township?
July, with a typical high of 85° and a low of 64°. About 16 days a year reach 90° (Blue Marsh Lake, PA).
When is the first and last frost in Heidelberg Township?
In half of years the last spring frost (32°) comes by April 26 and the first fall frost by October 19, about 176 frost-free days, at Blue Marsh Lake, PA.
What growing zone is Heidelberg Township in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 3°.
What is the best time of year to visit Heidelberg Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Heidelberg Township getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 72% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Heidelberg Township.
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.