Charles City and Mason City have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Charles City | Metric | Mason City |
|---|---|---|
| 191 days | Sunny daysclear or partly cloudy skies | 190 days |
| 37 in | Precipitationper year | 37 in |
| 119 days | Wet daysrain or snow per year | 121 days |
| 38 in | Snowfallper year | 44 in |
| 9 days | Hot daysabove 90 °F | 9 days |
| 150 days | Freezing nightsat or below 32 °F | 158 days |
| 72% | Humidityaverage relative | 72% |
| 47 °F | Average temperatureyear round | 46 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Charles City high | 25 | 29 | 43 | 58 | 69 | 79 | 82 | 80 | 73 | 60 | 44 | 30 |
| Mason City high | 24 | 29 | 41 | 56 | 69 | 79 | 82 | 80 | 74 | 60 | 43 | 30 |
| Charles City low | 9 | 13 | 25 | 37 | 49 | 59 | 62 | 60 | 51 | 39 | 26 | 15 |
| Mason City low | 7 | 11 | 23 | 35 | 47 | 58 | 62 | 59 | 50 | 38 | 25 | 14 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Charles City | 1.2 | 1.3 | 2.4 | 4.1 | 5.0 | 5.1 | 4.0 | 3.9 | 3.3 | 2.9 | 2.0 | 1.6 |
| Mason City | 1.1 | 1.3 | 2.4 | 4.0 | 5.1 | 5.4 | 4.0 | 4.0 | 3.5 | 2.7 | 1.9 | 1.5 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Charles City | 12 | 12 | 15 | 14 | 15 | 16 | 21 | 20 | 20 | 18 | 15 | 13 |
| Mason City | 12 | 12 | 15 | 14 | 15 | 16 | 21 | 21 | 20 | 17 | 15 | 12 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Charles City vs another city
- Charles City vs Waverly, IA
- Charles City vs Clear Lake, IA
- Charles City vs Cedar Falls, IA
- Charles City vs Waterloo, IA
- Charles City vs Austin, MN
- Charles City vs New York, NY
- Charles City vs Los Angeles, CA
- Charles City vs Chicago, IL
- Charles City vs Houston, TX
- Charles City vs Phoenix, AZ
- Charles City vs Philadelphia, PA
Mason City vs another city
- Mason City vs Clear Lake, IA
- Mason City vs Albert Lea, MN
- Mason City vs Austin, MN
- Mason City vs Iowa Falls, IA
- Mason City vs Waverly, IA
- Mason City vs New York, NY
- Mason City vs Los Angeles, CA
- Mason City vs Chicago, IL
- Mason City vs Houston, TX
- Mason City vs Phoenix, AZ
- Mason City 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).