Glenmoore, Pennsylvania climate: Normal weather by month, frost dates and records
Glenmoore's normal year runs from 23°F January nights to 85°F July afternoons, with 50.8 inches of precipitation and 28 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.4°C, January lows of −5°C, July highs of 29°C, 1,291 mm of precipitation a year.
- NOAA stationGlenmoore
- Station IDUSC00363321
- Location40.10°N 75.75°W
- Elevation500 ft (152 m)
- Population (census place)898
On October 23, the normal high in Glenmoore is 62°F and the normal low 41°F, and the chance of measurable rain or snow is 31%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Glenmoore.
- Jan 38° 23°
- Feb 41° 23°
- Mar 49° 30°
- Apr 62° 40°
- May 72° 50°
- Jun 80° 59°
- Jul 85° 64°
- Aug 83° 62°
- Sep 76° 55°
- Oct 64° 44°
- Nov 53° 35°
- Dec 43° 28°
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 Glenmoore each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 23°F. The most precipitation falls in September (4.86 in), the least in February (3.19 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 23°F | 30.3°F | 3.72 | 8.9 | 12 | <1 | 26 | 9 h 40 min |
| February | 41°F | 23°F | 32.2°F | 3.19 | 9.5 | 10 | <1 | 23 | 10 h 40 min |
| March | 49°F | 30°F | 39.7°F | 4.49 | 4.0 | 12 | <1 | 20 | 11 h 50 min |
| April | 62°F | 40°F | 51.0°F | 4.02 | 1.0 | 12 | <1 | 5 | 13 h 10 min |
| May | 72°F | 50°F | 61.0°F | 4.03 | 0.0 | 12 | 1 | <1 | 14 h 20 min |
| June | 80°F | 59°F | 69.8°F | 4.62 | 0.0 | 11 | 2 | <1 | 15 h |
| July | 85°F | 64°F | 74.4°F | 4.84 | 0.0 | 11 | 9 | <1 | 14 h 50 min |
| August | 83°F | 62°F | 72.6°F | 4.63 | 0.0 | 10 | 3 | <1 | 13 h 50 min |
| September | 76°F | 55°F | 65.8°F | 4.86 | 0.0 | 9 | 2 | <1 | 12 h 30 min |
| October | 64°F | 44°F | 54.2°F | 4.54 | 0.2 | 10 | <1 | 1 | 11 h 10 min |
| November | 53°F | 35°F | 43.9°F | 3.40 | 0.9 | 9 | <1 | 12 | 10 h |
| December | 43°F | 28°F | 35.4°F | 4.48 | 3.9 | 11 | <1 | 20 | 9 h 20 min |
| Year (annual) | 62°F | 43°F | 52.5°F | 50.82 | 28.4 | 129 | 16 | 107 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −5°C | −0.9°C | 94 mm | 23 cm |
| February | 5°C | −5°C | 0.1°C | 81 mm | 24 cm |
| March | 10°C | −1°C | 4.3°C | 114 mm | 10 cm |
| April | 17°C | 5°C | 10.6°C | 102 mm | 3 cm |
| May | 22°C | 10°C | 16.1°C | 102 mm | 0 cm |
| June | 27°C | 15°C | 21.0°C | 117 mm | 0 cm |
| July | 29°C | 18°C | 23.6°C | 123 mm | 0 cm |
| August | 28°C | 17°C | 22.6°C | 118 mm | 0 cm |
| September | 25°C | 13°C | 18.8°C | 123 mm | 0 cm |
| October | 18°C | 7°C | 12.3°C | 115 mm | 1 cm |
| November | 12°C | 2°C | 6.6°C | 86 mm | 2 cm |
| December | 6°C | −2°C | 1.9°C | 114 mm | 10 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00363321; 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 Glenmoore?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (9).
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 USC00363321.
When is the last frost in Glenmoore?
In Glenmoore, the last spring frost (32°F) comes after April 11 in half of years and after April 29 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 16 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 111 year in 10 after April 29; 9 in 10 after March 28
- First autumn frost, half of years before
- November 11 year in 10 before October 16; 9 in 10 before November 17
NOAA puts the median frost-free season at 205 days, and the season without a hard freeze (28°F) at 232 days.
A hard freeze (28°F) comes after March 31 in half of springs and before November 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Glenmoore in zone 7a in ZIP code 19343, 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 USC00363321; 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 Glenmoore?
In a normal year in Glenmoore, 16 days a year reach 90°F, 107 nights fall to 32°F or colder and 129 days bring measurable precipitation.
- Days at 90°F or more
- 16a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 107a normal year
- Days that stay below freezing
- 23high of 32°F or less
- Days with 0.01 inch of precipitation
- 129a normal year
- Days with 1 inch of snow or more
- 8a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00363321.
How sunny is Glenmoore?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Glenmoore, 3.9 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.9 |
| February | 68% | 2.7 |
| March | 67% | 3.6 |
| April | 70% | 4.8 |
| May | 69% | 5.3 |
| June | 74% | 5.9 |
| July | 79% | 6.0 |
| August | 77% | 5.2 |
| September | 75% | 4.2 |
| October | 69% | 3.0 |
| November | 70% | 2.1 |
| December | 63% | 1.6 |
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 Glenmoore need?
A normal year in Glenmoore brings 5,377 heating degree days, 0% more than the median U.S. place (5,373), and 859 cooling degree days, 5% 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 3,245 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,077 | 0 |
| February | 920 | 0 |
| March | 784 | 0 |
| April | 429 | 9 |
| May | 167 | 43 |
| June | 22 | 164 |
| July | 1 | 293 |
| August | 4 | 238 |
| September | 77 | 101 |
| October | 346 | 12 |
| November | 633 | 0 |
| December | 918 | 0 |
| Year (annual) | 5,377 | 859 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00363321. 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 Glenmoore's climate compare?
Glenmoore is warmer than 88 of the other 107 places with their own NOAA record in Pennsylvania, and wetter than 97. Across the 7,247 U.S. stations with normals, its annual mean of 52.5°F is warmer than 52%.
In the Köppen classification computed from these normals, Glenmoore 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 Glenmoore share this climate record?
2 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.
- Eagleview, PA2,105 people · 5 mi SE
- Eagle, PA378 people · 4 mi E
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 Glenmoore's climate
What is the coldest month in Glenmoore?
January, with a normal high of 38°F and a normal low of 23°F. The warmest is July (85°F by day, 64°F at night).
Does it snow in Glenmoore?
Yes: 28 inches in a normal year, falling on 16 days with 0.1 inch or more, the most in February (9.5 inches).
What is the rainiest month in Glenmoore?
September, with 4.86 in of precipitation in a normal year; the driest is February with 3.19 in.
What plant hardiness zone is Glenmoore in?
The USDA's 2023 map puts Glenmoore in zone 7a in ZIP code 19343, the nearest ZIP area.
How late can frost come in Glenmoore?
In half of years the last 32°F night comes after April 11; in one year in ten it comes after April 29. Waiting until April 29 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Hopewell Morgantown, PA8 miles from this station, 52.0°F a year
- Coatesville, PA9 miles from this station, 52.8°F a year
- West Chester, PA11 miles from this station, 52.4°F a year
- Phoenixville, PA14 miles from this station, 54.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made