Summer arrives softly in Armagh Township, cooler than in 88% of U.S. towns
Midwinter brings lows of about 19°. The gap between a January night and a July afternoon is 62°. Its January nights bite harder than in 67% of U.S. towns. Radiators earn their keep from November to April, the months that average under 50°.
A year in Armagh Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Armagh Township’s climate
Compared with towns across the U.S., with Armagh Township’s place in Pennsylvania beside it.
What a year in Armagh Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 153 frost-free days a year
In half of years the last 32° night comes by May 5 and the first by October 6. Frost and day counts come from NOAA’s station at Millheim, PA, 9 miles from the town’s center, 330 ft lower.
The 2023 USDA map puts Armagh Township’s center in zone 6b: 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 44 inches of snow a winter
Snow, measured at State College, PA, is heaviest from January through February, about 11 inches a month. Precipitation (rain plus melted snow) adds up to 45 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 146 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Armagh Township
93% 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 Millheim, PA.
Living with Armagh Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
153 frost-free days in zone 6b. The last frost comes by May 5 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 6.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 87 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Armagh Township from natural hazards, river flooding is the largest share (84%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Armagh Township and its neighbors
Derry Township the hottest July afternoons (85°, 4° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Armagh 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 |
|---|---|---|---|---|
| Armagh Township, PA | 19° | 81° | 45" | 44" |
| Danvers, MA | 20° | 81° | 48" | 48" |
| Aurora, OH | 19° | 82° | 42" | 45" |
| Mount Hope, NY | 17° | 82° | 47" | 43" |
| North Stonington, CT | 20° | 82° | 47" | 38" |
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 Armagh Township averaged 0.8° warmer than the 1900s. The biggest change is in December (+2.2°).
A smaller shift than in 89% 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 Armagh Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Armagh Township’s place among Pennsylvania’s.
Armagh Township weather by month
Highs, lows and precipitation from NOAA’s grid at Armagh Township’s center; snow, wet days and snow on the ground from State College, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 33° | 19° | 3.2" | 11.3" | 14 | 14 | 17° – 34° |
| February | 37° | 20° | 2.5" | 11.6" | 11 | 14 | 16° – 35° |
| March | 46° | 27° | 3.6" | 9.4" | 12 | 8 | 30° – 47° |
| April | 59° | 38° | 3.8" | 0.9" | 14 | 0 | 43° – 54° |
| May | 69° | 48° | 4.3" | 0.0" | 15 | 0 | 54° – 65° |
| June | 77° | 56° | 4.2" | 0.0" | 12 | 0 | 63° – 69° |
| July | 81° | 61° | 4.1" | 0.0" | 12 | 0 | 66° – 75° |
| August | 79° | 60° | 3.9" | 0.0" | 11 | 0 | 65° – 74° |
| September | 72° | 53° | 4.7" | 0.0" | 11 | 0 | 60° – 67° |
| October | 61° | 43° | 4.0" | 0.4" | 11 | 0 | 47° – 58° |
| November | 49° | 32° | 3.3" | 2.6" | 11 | 2 | 35° – 45° |
| December | 38° | 24° | 3.5" | 7.6" | 13 | 8 | 22° – 39° |
| Year | 58° | 40° | 45.1" | 43.8" | 146 | 46 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 16° to 35°. June is the most reliable, staying within 6°.
Where Armagh 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 Armagh Township’s center.
- Snow: State College, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Millheim, PA, 9 miles from the town’s center, 330 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 Armagh Township’s climate
What is the weather like in Armagh Township?
A typical July afternoon reaches 81°, a January night drops to 19°, and about 44 inches of snow falls in a normal winter. Colder January nights than 67% of U.S. towns; cooler July afternoons than 88% of U.S. towns.
How cold does it get in Armagh Township in winter?
January nights average 19°. About 152 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 Armagh Township get?
About 44 inches in a normal winter at State College, PA, heaviest from January through February, about 11 inches a month, with snow on the ground about 46 days a year.
How hot does it get in Armagh Township?
July, with a typical high of 81° and a low of 61°. About 11 days a year reach 90° (Millheim, PA).
When is the first and last frost in Armagh Township?
In half of years the last spring frost (32°) comes by May 5 and the first fall frost by October 6, about 153 frost-free days, at Millheim, PA.
What growing zone is Armagh Township in?
Zone 6b 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 Armagh Township?
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 Armagh Township getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 89% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Armagh 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.