Willow Grove, PA Climate: Temperature by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Willow Grove's primary NOAA station, WILLOW GROVE NAS.
The climate verdict for Willow Grove
Willow Grove, Pennsylvania has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 54°F. July is the warmest month at 76°F and January the coldest at 32°F.
- 54°F
- annual average temperature (NOAA normal)
- 204 days
- growing season, frost-free days
Willow Grove: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00014793 · Willow Grove, PA 54°F mean
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-UNK · SWING-MID · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 54°F
- RANK-MID #3,911
- PHOTO-FINISH ≈ York 3 Ssw Pump
- PRCP-UNK Rain n/a
- SWING-MID 44°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 5,008 HDD
- STN-1 USW00014793
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: York 3 Ssw Pump Stn, PA (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every PA station list.
- Willow Grove (this station) 54°F
- Cold Martinsburg, WV 54°F
- Hot Freehold-marlbo…, NJ 54°F
- Near York 3 Ssw Pump, PA 54°F
- Near Winona, MO 54°F
Climate Living Index · Willow Grove
Willow Grove: 65/100 · grade C
Willow Grove publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Willow Grove, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 103 calendar days | 74/100 · B |
| Frost-free season | 204 days/year | 67/100 · C |
| Annual temperature balance | 54.0°F · 13.5° from 67.5°F | 56/100 · C |
Willow Grove · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where Willow Grove sits across the climate record
Available NOAA 1991–2020 fields for Willow Grove are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- 57th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Seasonal temperature swing
- 54th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 40°F (4°C) | 24°F (-4°C) | 32°F (0°C) | N/A | 24.4 | 0.0 |
| February | 43°F (6°C) | 26°F (-3°C) | 35°F (1°C) | N/A | 20.8 | 0.0 |
| March | 51°F (11°C) | 32°F (0°C) | 42°F (5°C) | N/A | 14.6 | 0.0 |
| April | 63°F (17°C) | 42°F (6°C) | 52°F (11°C) | N/A | 3.0 | 0.5 |
| May | 72°F (22°C) | 52°F (11°C) | 62°F (17°C) | N/A | 0.1 | 1.5 |
| June | 81°F (27°C) | 61°F (16°C) | 71°F (22°C) | N/A | 0.0 | 5.2 |
| July | 85°F (30°C) | 67°F (19°C) | 76°F (24°C) | N/A | 0.0 | 8.0 |
| August | 83°F (28°C) | 65°F (18°C) | 74°F (23°C) | N/A | 0.0 | 6.0 |
| September | 76°F (24°C) | 58°F (14°C) | 67°F (19°C) | N/A | 0.0 | 1.1 |
| October | 64°F (18°C) | 47°F (8°C) | 56°F (13°C) | N/A | 1.0 | 0.0 |
| November | 54°F (12°C) | 37°F (3°C) | 45°F (7°C) | N/A | 9.3 | 0.0 |
| December | 44°F (6°C) | 30°F (-1°C) | 37°F (3°C) | N/A | 19.1 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 86°F around July 9, short of 90°F on every date, while 103 dates carry a normal low at or below freezing, the coldest 23°F near January 20.
The freezing stretch
The normal low stays at or below 32°F into March 15, then returns to freezing around December 4, covering 103 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
April 20 carries the biggest normal gap between afternoon and dawn, 21°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Willow Grove.
Where Willow Grove Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 21°F.
Willow Grove earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
November 1
50% probability date
Last Spring Freeze
April 11
50% probability date
Growing Season
204 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,008
Higher = more heating needed
Cooling Degree Days
1,027
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside PA closest to Willow Grove on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (54°F here).
- Boardman, OR 54°F · 0.0°F off
- Damascus, MD 54°F · 0.0°F off
- Elsberry, MO 54°F · 0.0°F off
- Estacada, OR 54°F · 0.0°F off
Data-derived climate profile
How Willow Grove's climate pattern fits together
heating led · mid swing
Willow Grove's energy balance leans toward cold weather: 5,008 annual heating degree days against 1,027 for cooling. Its 44.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Willow Grove's frost-free season lasts about 204 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Willow Grove's middle-range seasonal profile. The measured spread is 44.1°F. The annual average is 54°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
A moisture-range label is withheld because Willow Grove's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from Willow Grove's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Willow Grove, not an official NOAA class or a year-ahead forecast.
Questions about Willow Grove's climate
How cold does Willow Grove get in winter? ▼
How much energy does heating and cooling require in Willow Grove? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Willow Grove's primary station: WILLOW GROVE NAS (USW00014793). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as a census-designated place (GEOID 4285408), not an incorporated municipality. Match rule for Willow Grove: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Willow Grove comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.