Photo: Nicholas A. Tonelli from Pennsylvania, USA · CC BY 2.0Weather without surprises: Mifflinburg keeps close to the norm for U.S. towns
In July the day’s top temperature is typically 85°. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 65° apart. Picnics, hikes and garden evenings come into their own from May to June and August to October, with highs of 64–83°.
A year in Mifflinburg at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mifflinburg’s climate
Compared with towns across the U.S., with Mifflinburg’s place in Pennsylvania beside it.
What a year in Mifflinburg feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 175 frost-free days a year
In half of years the last 32° night comes by April 25 and the first by October 19. Frost and day counts come from NOAA’s station at Laurelton Ctr, PA, 9 miles from the town’s center, 250 ft higher.
The 2023 USDA map puts Mifflinburg’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. 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 29 inches of snow a winter
Snow, measured at Selinsgrove 2 S, PA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 43 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 133 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Mifflinburg
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 Laurelton Ctr, PA.
Living with Mifflinburg’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
175 frost-free days in zone 6b. The last frost comes by Apr 25 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. 0.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Mifflinburg from natural hazards, river flooding is the largest share (82%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mifflinburg and its neighbors
West Buffalo Township has the coldest January nights next door (17°, 3° 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 Mifflinburg’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 |
|---|---|---|---|---|
| Mifflinburg, PA | 20° | 85° | 43" | 29" |
| Indianapolis, IN | 20° | 85° | 43" | 26" |
| Reynoldsburg, OH | 21° | 84° | 43" | 28" |
| Wappinger, NY | 19° | 85° | 44" | 36" |
| New Martinsville, WV | 22° | 85° | 46" | 27" |
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 Mifflinburg averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.7°).
A smaller 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 Mifflinburg compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mifflinburg’s place among Pennsylvania’s.
Mifflinburg weather by month
Highs, lows and precipitation from NOAA’s grid at Mifflinburg’s center; snow, wet days and snow on the ground from Selinsgrove 2 S, PA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 36° | 20° | 3.0" | 9.7" | 12 | 12 | 19° – 36° |
| February | 39° | 21° | 2.4" | 7.6" | 10 | 11 | 18° – 37° |
| March | 49° | 28° | 3.4" | 5.6" | 11 | 6 | 32° – 49° |
| April | 62° | 38° | 3.6" | 0.6" | 12 | 0 | 45° – 55° |
| May | 73° | 48° | 3.8" | 0.0" | 13 | 0 | 55° – 66° |
| June | 80° | 58° | 4.0" | 0.0" | 12 | 0 | 66° – 72° |
| July | 85° | 62° | 4.2" | 0.0" | 11 | 0 | 69° – 78° |
| August | 83° | 60° | 3.8" | 0.0" | 11 | 0 | 67° – 75° |
| September | 76° | 53° | 4.4" | 0.0" | 10 | 0 | 62° – 68° |
| October | 64° | 42° | 3.8" | 0.2" | 11 | 0 | 48° – 59° |
| November | 51° | 33° | 3.1" | 1.2" | 10 | 1 | 36° – 46° |
| December | 40° | 25° | 3.2" | 4.1" | 11 | 6 | 24° – 42° |
| Year | 61° | 41° | 42.8" | 29.0" | 133 | 35 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 18° to 37°. June is the most reliable, staying within 6°.
Where Mifflinburg’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 Mifflinburg’s center.
- Snow: Selinsgrove 2 S, PA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Laurelton Ctr, PA, 9 miles from the town’s center, 250 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 Mifflinburg’s climate
What is the weather like in Mifflinburg?
A typical July afternoon reaches 85°, a January night drops to 20°, and about 29 inches of snow falls in a normal winter. Colder January nights than 59% of U.S. towns; cooler July afternoons than 51% of U.S. towns.
How cold does it get in Mifflinburg in winter?
January nights average 20°. About 142 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 19°.
How much snow does Mifflinburg get?
About 29 inches in a normal winter at Selinsgrove 2 S, PA, most of it in January, with snow on the ground about 35 days a year.
How hot does it get in Mifflinburg?
July, with a typical high of 85° and a low of 62°. About 24 days a year reach 90° (Laurelton Ctr, PA).
When is the first and last frost in Mifflinburg?
In half of years the last spring frost (32°) comes by April 25 and the first fall frost by October 19, about 175 frost-free days, at Laurelton Ctr, PA.
What growing zone is Mifflinburg in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Mifflinburg?
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 Mifflinburg getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 65% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mifflinburg.
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.