Arlington Heights and Mount Prospect have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Arlington Heights | Metric | Mount Prospect |
|---|---|---|
| 182 days | Sunny daysclear or partly cloudy skies | 182 days |
| 37 in | Precipitationper year | 37 in |
| 127 days | Wet daysrain or snow per year | 127 days |
| 37 in | Snowfallper year | 37 in |
| 15 days | Hot daysabove 90 °F | 16 days |
| 121 days | Freezing nightsat or below 32 °F | 119 days |
| 71% | Humidityaverage relative | 71% |
| 51 °F | Average temperatureyear round | 51 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington Heights high | 31 | 35 | 46 | 58 | 69 | 79 | 84 | 82 | 75 | 62 | 48 | 37 |
| Mount Prospect high | 32 | 36 | 47 | 58 | 70 | 80 | 84 | 82 | 75 | 63 | 49 | 37 |
| Arlington Heights low | 18 | 21 | 30 | 39 | 50 | 60 | 65 | 64 | 56 | 44 | 33 | 23 |
| Mount Prospect low | 18 | 21 | 30 | 39 | 50 | 60 | 66 | 64 | 56 | 44 | 33 | 24 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington Heights | 2.1 | 1.9 | 2.5 | 4.3 | 4.4 | 3.9 | 3.6 | 3.7 | 2.9 | 3.1 | 2.4 | 2.1 |
| Mount Prospect | 2.1 | 1.9 | 2.5 | 4.3 | 4.4 | 3.9 | 3.6 | 3.7 | 2.9 | 3.1 | 2.4 | 2.1 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington Heights | 11 | 11 | 14 | 14 | 15 | 16 | 20 | 20 | 20 | 16 | 14 | 12 |
| Mount Prospect | 11 | 11 | 14 | 14 | 15 | 16 | 20 | 20 | 20 | 16 | 14 | 12 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Arlington Heights vs another city
- Arlington Heights vs Rolling Meadows, IL
- Arlington Heights vs Prospect Heights, IL
- Arlington Heights vs Palatine, IL
- Arlington Heights vs Wheeling, IL
- Arlington Heights vs Buffalo Grove, IL
- Arlington Heights vs New York, NY
- Arlington Heights vs Los Angeles, CA
- Arlington Heights vs Chicago, IL
- Arlington Heights vs Houston, TX
- Arlington Heights vs Phoenix, AZ
- Arlington Heights vs Philadelphia, PA
Mount Prospect vs another city
- Mount Prospect vs Prospect Heights, IL
- Mount Prospect vs Des Plaines, IL
- Mount Prospect vs Rolling Meadows, IL
- Mount Prospect vs Wheeling, IL
- Mount Prospect vs Elk Grove Village, IL
- Mount Prospect vs New York, NY
- Mount Prospect vs Los Angeles, CA
- Mount Prospect vs Chicago, IL
- Mount Prospect vs Houston, TX
- Mount Prospect vs Phoenix, AZ
- Mount Prospect 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).