State guides · Pennsylvania · Climate by town
Butler, PA rainfall, snowfall and frost dates
Thirty-year averages for Butler from NOAA’s 1991–2020 U.S. Climate Normals: rain and snow by month, the last and first freeze, the growing season, and a frost check for any date.
Butler averages 43.21 in. of precipitation and 34.9 in. of snow a year. The median last spring freeze (32°F) is May 7 and the median first fall freeze is Oct. 14, a growing season of about 159 days. From NOAA’s Butler 2 SW station; checked Nov. 13, 2026.
Is it safe to plant in Butler yet?
Dates from January through July check the last spring freeze. Dates from August on check the first fall freeze.
From NOAA’s freeze probabilities for this station. Low spots and valleys can freeze later in spring and earlier in fall than the station.
Butler frost dates
| 32°F freeze | 9 in 10 years | 1 in 2 years | 1 in 10 years |
|---|---|---|---|
| Last spring freeze comes after | April 22 | May 7 | May 23 |
| First fall freeze comes before | Oct. 30 | Oct. 14 | Oct. 1 |
Hard freeze (28°F): the median last one in spring is April 26 and the median first one in fall is Oct. 27. The growing season between the median 32°F freezes, May 7 to Oct. 14, runs about 159 days.
Planting tender plants after May 23 means a freeze afterward in only about 1 year in 10. Planting on May 7 leaves even odds. For lawn seeding windows, see our Pennsylvania grass seed guide.
Butler rain and snow by month
| Month | Precipitation (in.) | Snow (in.) | Avg high (°F) | Avg low (°F) |
|---|---|---|---|---|
| January | 3.36 | 11.3 | 34.3 | 17.3 |
| February | 2.66 | 9.7 | 37.4 | 18.3 |
| March | 3.28 | 5.3 | 46.4 | 25.2 |
| April | 3.50 | 0.6 | 60.0 | 34.6 |
| May | 3.80 | 0.0 | 70.0 | 44.8 |
| June | 4.33 | 0.0 | 77.9 | 54.3 |
| July | 4.16 | 0.0 | 81.7 | 58.2 |
| August | 4.02 | 0.0 | 80.7 | 56.8 |
| September | 4.09 | 0.0 | 74.3 | 49.6 |
| October | 3.30 | 0.1 | 61.9 | 38.9 |
| November | 3.34 | 1.1 | 49.7 | 29.7 |
| December | 3.37 | 6.8 | 39.1 | 23.2 |
| Year | 43.21 | 34.9 | Average 48.5°F | |
Precipitation is rain plus the water in melted snow and ice. Snow is the depth of new snowfall. Monthly figures are NOAA’s normals and may not add exactly to the yearly totals because of rounding.
- Wettest month: June, 4.33 in. Driest: February, 2.66 in.
- Snowiest month: January, 11.3 in. Months averaging 1 in. or more: November through March. December through February bring about 80% of the year’s snow.
- Average lows at or below 32°F: November through March.
- Coldest nights: January, average low 17.3°F. Warmest days: July, average high 81.7°F.
Planning outdoor work in Butler
Average lows sit at or below freezing from November through March, so plan base work, planting and seeding around the frost dates above. Frost depth and ground snow load for footings and roofs are set by your town; our design criteria by ZIP tool shows who sets them for your address. For planting beds, start with a soil test.
Towns near Butler
| Town | Miles | Precip. (in.) | Snow (in.) | Median last freeze | Median first freeze |
|---|---|---|---|---|---|
| New Castle | 26 | 41.78 | 27.5 | April 30 | Oct. 23 |
| Pittsburgh | 29 | 39.61 | 44.1 | April 23 | Oct. 23 |
| Franklin | 39 | 46.33 | 53.7 | May 2 | Oct. 23 |
| Indiana | 45 | 47.86 | 45.8 | May 8 | Oct. 13 |
| Donora | 47 | 40.85 | 21.4 | April 27 | Oct. 22 |
| Washington | 48 | 41.34 | 31.9 | April 24 | Oct. 23 |
Miles are straight-line distances between NOAA stations. See every town on our Pennsylvania rainfall and snowfall by town chart.
Questions
How much snow does Butler, PA get a year?
Butler averages 34.9 in. of snow a year, per NOAA’s 1991–2020 normals for its Butler 2 SW station. The snowiest month is January, at 11.3 in.
How much rain does Butler, PA get a year?
Butler averages 43.21 in. of precipitation a year, counting rain and melted snow. The wettest month is June, at 4.33 in.
When is the last frost in Butler, PA?
The median last 32°F freeze in Butler is May 7. In 1 year in 10 it comes after May 23, and in 9 years in 10 after April 22.
When is the first frost in Butler, PA?
The median first 32°F freeze in Butler is Oct. 14. In 1 year in 10 it comes before Oct. 1, and in 9 years in 10 before Oct. 30.
How long is the growing season in Butler?
About 159 days between the median last and first 32°F freezes, May 7 to Oct. 14.
What is the coldest month in Butler?
January, with an average low of 17.3°F and an average high of 34.3°F.
About this data
Station: NOAA’s Butler 2 SW station (GHCN USC00361139), about 2 miles southwest of Butler, elevation 1,000 ft, 40.841° N, 79.916° W. These are NOAA’s 1991–2020 U.S. Climate Normals, 30-year averages that NOAA recomputes every 10 years. NOAA rates this station’s precipitation normals representative, its snow normals provisional and its temperature and freeze normals standard. Representative means at least 10 years of data, with missing months filled from nearby stations. Provisional means at least 10 years of data, with gaps NOAA could not fill from nearby stations. Standard means at least 24 years of data, with missing months filled from nearby stations.
Your yard can differ from the station. Elevation, valleys and hillsides change how much snow falls and when the first and last freezes come.
Sources: NOAA NCEI, U.S. Climate Normals; annual and seasonal normals for USC00361139; monthly normals for USC00361139; NOAA normals file documentation. Checked Nov. 13, 2026.
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See landscape designAll Pennsylvania townsAlso: Pennsylvania grass seed guide, soil testing, design criteria by ZIP.
Muthler Landscaping & Construction LLC · 913 Bellefonte Ave, Lock Haven, PA 17745 · (570) 397-9800 · PA HIC #PA212584. Climate data from NOAA; not a forecast.
Using this guide? Link to it or cite it. It's free to use with a link back, and we keep it updated against official sources.
Cite as: Muthler Landscaping & Construction, “Butler, PA Rainfall, Snowfall and Frost Dates,” https://muthlerlandscaping.com/state-guides/pennsylvania/climate/butler/ (last checked November 13, 2026).
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