Greenfields has chilly winters and warm summers
A typical July afternoon reaches 87°, a January night drops to 22°, and about 27 inches of snow falls in a normal winter.
A year in Greenfields at a glance
Each month’s typical high and low, and what it brings.
What stands out about Greenfields’s climate
Read from where Greenfields sits among Pennsylvania’s towns. The page puts what stands out first.
About 197 frost-free days a year
In half of years the last 32° night comes by April 14 and the first by October 29.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Greenfields’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
197 frost-free days. The last frost comes by Apr 14 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 29.
About 27" a winter over 7 days with an inch or more, most in February. Snow covers the ground about 30 days a year.
Months averaging under 55° run from October through April. Heating is 83% of the year’s heating-and-cooling load.
About 24 days a year reach 90°, and July afternoons average 87°.
The nicest months are May, June, September and October. 5.3 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →What a year in Greenfields feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
27 inches of snow, 46 of rain and melt
July is the wettest month and February the driest. Rain or snow falls on about 142 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Greenfields and its neighbors
Bern has the coldest January nights next door (22°) and Reading the hottest July afternoons (87°). Tap a town to see its climate.
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 Greenfields averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 83% of U.S. towns.
Change by month
How Greenfields compares
Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.
Greenfields weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 39° | 22° | 3.3" | 7.4" | 11 | 8 | 21° – 38° |
| February | 42° | 23° | 2.5" | 9.5" | 12 | 11 | 21° – 40° |
| March | 51° | 30° | 3.6" | 5.0" | 12 | 5 | 34° – 49° |
| April | 64° | 40° | 3.5" | 0.3" | 13 | 0 | 47° – 57° |
| May | 74° | 50° | 3.7" | 0 | 14 | 0 | 57° – 67° |
| June | 82° | 60° | 4.4" | 0 | 13 | 0 | 67° – 74° |
| July | 87° | 64° | 4.7" | 0 | 12 | 0 | 71° – 79° |
| August | 85° | 62° | 4.4" | 0 | 11 | 0 | 69° – 77° |
| September | 78° | 55° | 4.7" | 0 | 10 | 0 | 63° – 70° |
| October | 66° | 43° | 4.1" | 0.3" | 12 | 0 | 49° – 62° |
| November | 54° | 34° | 3.1" | 0.8" | 10 | 1 | 39° – 49° |
| December | 44° | 27° | 3.7" | 3.9" | 12 | 5 | 27° – 46° |
| Year | 64° | 43° | 45.8" | 27.2" | 142 | 30 |
Heating and cooling a home in Greenfields
83% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 27° to 46°. June is the most reliable, staying within 7°.
Common questions about Greenfields’s climate
What is the coldest month in Greenfields?
January, with a typical high of 39° and a low of 22°.
What is the hottest month in Greenfields?
July, with a typical high of 87° and a low of 64°. About 24 days a year reach 90°.
How much snow does Greenfields get?
About 27 inches in a normal winter, most of it in February.
When is the first frost in Greenfields?
In half of years the first 32° night comes by October 29, and the last spring frost by April 14.
What is the rainiest month in Greenfields?
July, with 4.7 inches of rain and melted snow. The year totals 46 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Greenfields.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Greenfields itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Reading 3.5 Sw, PA (4 mi, snow) and Reading Spaatz Fld, PA (1 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.