Connellsville, Pennsylvania climate: Normal weather by month, frost dates and records
Connellsville's normal year runs from 21°F January nights to 84°F July afternoons, with 46.9 inches of precipitation and 24 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.1°C, January lows of −6°C, July highs of 29°C, 1,190 mm of precipitation a year.
- NOAA stationConnellsville (2 mi SSW)
- Station IDUSC00361726
- Location40.00°N 79.60°W
- Elevation900 ft (274 m)
- Population6,682
On October 23, the normal high in Connellsville is 63°F and the normal low 39°F, and the chance of measurable rain or snow is 45%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Connellsville.
- Jan 38° 21°
- Feb 42° 21°
- Mar 51° 28°
- Apr 64° 38°
- May 73° 49°
- Jun 80° 58°
- Jul 84° 62°
- Aug 83° 61°
- Sep 77° 54°
- Oct 66° 43°
- Nov 53° 32°
- Dec 43° 26°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Connellsville each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 21°F. The most precipitation falls in June (4.93 in), the least in February (3.02 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 21°F | 29.5°F | 3.21 | 9.5 | 18 | <1 | 26 | 9 h 40 min |
| February | 42°F | 21°F | 31.5°F | 3.02 | 7.4 | 15 | <1 | 22 | 10 h 40 min |
| March | 51°F | 28°F | 39.4°F | 3.60 | 3.2 | 15 | <1 | 20 | 11 h 50 min |
| April | 64°F | 38°F | 50.7°F | 4.22 | 0.1 | 16 | <1 | 9 | 13 h 10 min |
| May | 73°F | 49°F | 61.1°F | 4.72 | 0.0 | 16 | 1 | 1 | 14 h 20 min |
| June | 80°F | 58°F | 68.9°F | 4.93 | 0.0 | 14 | 2 | <1 | 15 h |
| July | 84°F | 62°F | 73.0°F | 4.73 | 0.0 | 13 | 8 | <1 | 14 h 50 min |
| August | 83°F | 61°F | 72.1°F | 4.44 | 0.0 | 13 | 4 | <1 | 13 h 50 min |
| September | 77°F | 54°F | 65.4°F | 3.92 | 0.0 | 12 | 2 | <1 | 12 h 30 min |
| October | 66°F | 43°F | 54.0°F | 3.44 | 0.1 | 14 | <1 | 3 | 11 h 10 min |
| November | 53°F | 32°F | 42.6°F | 3.29 | 0.4 | 13 | <1 | 15 | 10 h |
| December | 43°F | 26°F | 34.6°F | 3.34 | 3.7 | 17 | <1 | 21 | 9 h 20 min |
| Year (annual) | 63°F | 41°F | 51.9°F | 46.86 | 24.4 | 175 | 17 | 116 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −6°C | −1.4°C | 82 mm | 24 cm |
| February | 5°C | −6°C | −0.3°C | 77 mm | 19 cm |
| March | 10°C | −2°C | 4.1°C | 91 mm | 8 cm |
| April | 18°C | 3°C | 10.4°C | 107 mm | 0 cm |
| May | 23°C | 10°C | 16.2°C | 120 mm | 0 cm |
| June | 27°C | 14°C | 20.5°C | 125 mm | 0 cm |
| July | 29°C | 17°C | 22.8°C | 120 mm | 0 cm |
| August | 29°C | 16°C | 22.3°C | 113 mm | 0 cm |
| September | 25°C | 12°C | 18.6°C | 100 mm | 0 cm |
| October | 19°C | 6°C | 12.2°C | 87 mm | 0 cm |
| November | 12°C | 0°C | 5.9°C | 84 mm | 1 cm |
| December | 6°C | −3°C | 1.4°C | 85 mm | 9 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00361726; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Connellsville?
Normal highs sit between 65°F and 85°F in May, June, July, August, September and October. Of those, September has the fewest days with rain (12).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00361726.
When is the last frost in Connellsville?
In Connellsville, the last spring frost (32°F) comes after April 22 in half of years and after May 11 in one year in ten; the first autumn frost comes before October 27 in half of years and before October 14 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 221 year in 10 after May 11; 9 in 10 after April 6
- First autumn frost, half of years before
- October 271 year in 10 before October 14; 9 in 10 before November 10
NOAA puts the median frost-free season at 187 days, and the season without a hard freeze (28°F) at 214 days.
A hard freeze (28°F) comes after April 7 in half of springs and before November 8 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Connellsville in zone 6b in ZIP code 15425, the nearest ZIP area.
Frost dates for every NOAA station in Pennsylvania · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00361726; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Connellsville?
In a normal year in Connellsville, 17 days a year reach 90°F, 116 nights fall to 32°F or colder and 175 days bring measurable precipitation.
- Days at 90°F or more
- 17a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 116a normal year
- Days that stay below freezing
- 23high of 32°F or less
- Days with 0.01 inch of precipitation
- 175a normal year
- Days with 1 inch of snow or more
- 9a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00361726.
How sunny is Connellsville?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Connellsville, 3.8 kWh per square metre a day. August is the sunniest month (76%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.7 |
| February | 59% | 2.5 |
| March | 62% | 3.5 |
| April | 66% | 4.7 |
| May | 67% | 5.3 |
| June | 73% | 5.9 |
| July | 75% | 5.8 |
| August | 76% | 5.2 |
| September | 74% | 4.3 |
| October | 67% | 3.0 |
| November | 66% | 2.1 |
| December | 55% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Connellsville need?
A normal year in Connellsville brings 5,532 heating degree days, 3% more than the median U.S. place (5,373), and 787 cooling degree days, 13% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,177 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,100 | 0 |
| February | 938 | 0 |
| March | 794 | 1 |
| April | 436 | 7 |
| May | 178 | 55 |
| June | 24 | 141 |
| July | 3 | 251 |
| August | 5 | 223 |
| September | 82 | 94 |
| October | 356 | 15 |
| November | 672 | 0 |
| December | 944 | 0 |
| Year (annual) | 5,532 | 787 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00361726. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Connellsville's climate compare?
Connellsville is warmer than 73 of the other 107 places with their own NOAA record in Pennsylvania, and wetter than 75. Across the 7,247 U.S. stations with normals, its annual mean of 51.9°F is warmer than 49%.
In the Köppen classification computed from these normals, Connellsville is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Connellsville share this climate record?
6 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Scottdale, PA4,329 people · 7 mi N
- South Connellsville, PA1,843 people · 1 mi E
- Dunbar, PA977 people · 2 mi SW
- Everson, PA742 people · 7 mi N
- Vanderbilt, PA397 people · 4 mi NW
- Dawson, PA338 people · 5 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Connellsville's climate
What is the coldest month in Connellsville?
January, with a normal high of 38°F and a normal low of 21°F. The warmest is July (84°F by day, 62°F at night).
Does it snow in Connellsville?
Yes: 24 inches in a normal year, falling on 16 days with 0.1 inch or more, the most in January (9.5 inches).
What is the rainiest month in Connellsville?
June, with 4.93 in of precipitation in a normal year; the driest is February with 3.02 in.
What plant hardiness zone is Connellsville in?
The USDA's 2023 map puts Connellsville in zone 6b in ZIP code 15425, the nearest ZIP area.
How late can frost come in Connellsville?
In half of years the last 32°F night comes after April 22; in one year in ten it comes after May 11. Waiting until May 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Uniontown, PA9 miles from this station, 52.1°F a year
- Chalk Hill (2 mi ENE), PA11 miles from this station, 46.9°F a year
- Donegal, PA14 miles from this station, 49.6°F a year
- Mount Pleasant, PA16 miles from this station, 50.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made