PA
Norristown and Trooper have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Norristown | Metric | Trooper |
|---|---|---|
| 203 days | Sunny daysclear or partly cloudy skies | 196 days |
| 43 in | Precipitationper year | 46 in |
| 120 days | Wet daysrain or snow per year | 126 days |
| 25 in | Snowfallper year | 22 in |
| 38 days | Hot daysabove 90 °F | 31 days |
| 107 days | Freezing nightsat or below 32 °F | 117 days |
| 69% | Humidityaverage relative | 69% |
| 55 °F | Average temperatureyear round | 54 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Norristown high | 42 | 44 | 52 | 65 | 75 | 84 | 89 | 87 | 80 | 68 | 57 | 46 |
| Trooper high | 41 | 43 | 52 | 64 | 74 | 83 | 88 | 86 | 79 | 67 | 56 | 46 |
| Norristown low | 23 | 25 | 32 | 42 | 52 | 62 | 67 | 65 | 58 | 45 | 35 | 28 |
| Trooper low | 22 | 24 | 31 | 41 | 51 | 61 | 66 | 64 | 56 | 44 | 34 | 27 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Norristown | 3.2 | 3.0 | 4.1 | 3.6 | 3.5 | 3.8 | 3.9 | 3.7 | 4.1 | 3.6 | 2.9 | 4.0 |
| Trooper | 3.3 | 3.0 | 4.0 | 3.8 | 3.9 | 4.3 | 4.4 | 4.0 | 4.6 | 3.8 | 3.1 | 3.9 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Norristown | 16 | 16 | 16 | 15 | 16 | 16 | 18 | 19 | 18 | 19 | 17 | 16 |
| Trooper | 16 | 15 | 16 | 14 | 16 | 16 | 18 | 18 | 18 | 19 | 17 | 16 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Norristown vs another city
- Norristown vs Bridgeport, PA
- Norristown vs King of Prussia, PA
- Norristown vs Plymouth Meeting, PA
- Norristown vs Conshohocken, PA
- Norristown vs Blue Bell, PA
- Norristown vs New York, NY
- Norristown vs Los Angeles, CA
- Norristown vs Chicago, IL
- Norristown vs Houston, TX
- Norristown vs Phoenix, AZ
- Norristown vs Philadelphia, PA
Trooper vs another city
- Trooper vs Audubon, PA
- Trooper vs King of Prussia, PA
- Trooper vs Collegeville, PA
- Trooper vs Bridgeport, PA
- Trooper vs Chesterbrook, PA
- Trooper vs New York, NY
- Trooper vs Los Angeles, CA
- Trooper vs Chicago, IL
- Trooper vs Houston, TX
- Trooper vs Phoenix, AZ
- Trooper vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).