Climate Mason City - Iowa
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 25 | 29 | 42 | 58 | 70 | 80 |
| Average low in ºF Av. low Lo | 7 | 12 | 24 | 35 | 47 | 57 |
| Av. precipitation in inch Av. precip. Pre. | 0.82 | 1.00 | 2.23 | 3.75 | 4.68 | 5.14 |
| Av. snowfall in inch Snowfall Sn | 11 | 8 | 6 | 3 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 83 | 81 | 73 | 60 | 43 | 28 |
| Average low in ºF Av. low Lo | 61 | 58 | 49 | 37 | 24 | 11 |
| Av. precipitation in inch Av. precip. Pre. | 4.70 | 4.04 | 3.27 | 2.45 | 1.88 | 1.24 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 4 | 9 |
Mason City experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm and fairly wet, with June being the wettest month. Winters are cold and snowy, bringing significant snowfall, while January is the driest month. Precipitation is spread relatively evenly through the year, with winter moisture often arriving as snow.
Mason City Climate Graph - Iowa Climate Chart
Daily normals Mason City - Iowa - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 24.7 | 7.9 | 0.04 | 0.04 | 0.31 | 0.80 |
| 2 Jan | 24.7 | 7.8 | 0.04 | 0.04 | 0.59 | 1.50 |
| 3 Jan | 24.6 | 7.7 | 0.08 | 0.08 | 0.91 | 2.30 |
| 4 Jan | 24.6 | 7.6 | 0.12 | 0.12 | 1.18 | 3.00 |
| 5 Jan | 24.5 | 7.5 | 0.12 | 0.12 | 1.50 | 3.80 |
| 6 Jan | 24.5 | 7.4 | 0.16 | 0.16 | 1.81 | 4.60 |
| 7 Jan | 24.4 | 7.3 | 0.20 | 0.20 | 2.09 | 5.30 |
| 8 Jan | 24.4 | 7.2 | 0.20 | 0.20 | 2.52 | 6.40 |
| 9 Jan | 24.4 | 7.1 | 0.24 | 0.24 | 2.80 | 7.10 |
| 10 Jan | 24.4 | 7.0 | 0.28 | 0.28 | 3.11 | 7.90 |
| 11 Jan | 24.4 | 7.0 | 0.28 | 0.28 | 3.50 | 8.90 |
| 12 Jan | 24.4 | 6.9 | 0.31 | 0.31 | 3.82 | 9.70 |
| 13 Jan | 24.4 | 6.9 | 0.35 | 0.35 | 4.21 | 10.70 |
| 14 Jan | 24.4 | 6.8 | 0.35 | 0.35 | 4.49 | 11.40 |
| 15 Jan | 24.4 | 6.8 | 0.39 | 0.39 | 4.88 | 12.40 |
| 16 Jan | 24.4 | 6.7 | 0.43 | 0.43 | 5.31 | 13.50 |
| 17 Jan | 24.5 | 6.7 | 0.43 | 0.43 | 5.59 | 14.20 |
| 18 Jan | 24.5 | 6.7 | 0.47 | 0.47 | 5.98 | 15.20 |
| 19 Jan | 24.5 | 6.7 | 0.47 | 0.47 | 6.42 | 16.30 |
| 20 Jan | 24.6 | 6.7 | 0.51 | 0.51 | 6.69 | 17.00 |
| 21 Jan | 24.7 | 6.7 | 0.55 | 0.55 | 7.09 | 18.00 |
| 22 Jan | 24.7 | 6.8 | 0.55 | 0.55 | 7.52 | 19.10 |
| 23 Jan | 24.8 | 6.8 | 0.59 | 0.59 | 7.91 | 20.10 |
| 24 Jan | 24.9 | 6.9 | 0.63 | 0.63 | 8.19 | 20.80 |
| 25 Jan | 25.0 | 6.9 | 0.67 | 0.67 | 8.58 | 21.80 |
| 26 Jan | 25.0 | 7.0 | 0.67 | 0.67 | 9.02 | 22.90 |
| 27 Jan | 25.2 | 7.1 | 0.71 | 0.71 | 9.41 | 23.90 |
| 28 Jan | 25.3 | 7.2 | 0.75 | 0.75 | 9.69 | 24.60 |
| 29 Jan | 25.4 | 7.3 | 0.75 | 0.75 | 10.12 | 25.70 |
| 30 Jan | 25.5 | 7.5 | 0.79 | 0.79 | 10.39 | 26.40 |
| 31 Jan | 25.7 | 7.6 | 0.83 | 0.83 | 10.79 | 27.40 |
Weather history Mason City - June 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Jun | 82.0 | 57.0 | 0.00 | 0.00 | - |
| 02 Jun | 82.0 | 53.1 | 0.00 | 0.00 | 0.0 |
| 03 Jun | 84.0 | 57.9 | 0.00 | 0.00 | - |
| 04 Jun | 81.0 | 60.1 | 0.16 | 0.00 | 0.0 |
| 05 Jun | 82.9 | 63.0 | 0.00 | 0.00 | - |
| 06 Jun | 86.0 | 64.0 | 0.00 | 0.00 | 0.0 |
| 07 Jun | 82.0 | 64.9 | 0.08 | 0.00 | 0.0 |
| 08 Jun | 82.0 | 66.0 | T | 0.00 | 0.0 |
| 09 Jun | 89.1 | 61.0 | 0.00 | 0.00 | 0.0 |
| 10 Jun | - | - | - | - | - |
| 11 Jun | - | - | - | - | - |
| 12 Jun | 82.9 | 59.0 | 0.00 | 0.00 | 0.0 |
| 13 Jun | - | - | - | - | - |
| 14 Jun | - | - | - | - | - |
| 15 Jun | - | - | - | - | - |
| 16 Jun | - | - | - | - | - |
| 17 Jun | - | - | - | - | - |
| 18 Jun | - | - | - | - | - |
| 19 Jun | - | - | - | - | - |
| 20 Jun | - | - | - | - | - |
| 21 Jun | - | - | - | - | - |
| 22 Jun | - | - | - | - | - |
| 23 Jun | - | - | - | - | - |
| 24 Jun | - | - | - | - | - |
| 25 Jun | - | - | - | - | - |
| 26 Jun | - | - | - | - | - |
| 27 Jun | - | - | - | - | - |
| 28 Jun | - | - | - | - | - |
| 29 Jun | - | - | - | - | - |
| 30 Jun | - | - | - | - | - |
Past weather Mason City
| Jun 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 83.4 ºF | 25 ºF | |
| Average low temperature Av. low temp. | 60.6 ºF | 7 ºF | |
| Total precipitation Total precip. | 0.24 inch | 0.82 inch | |
| Total snowfall Total snowfall | 0.00 inch | 11 inch | |
| Highest max temperature Highest max temp. | 89.1 ºF | - | |
| Lowest max temperature Lowest max temp. | 81.0 ºF | - | |
| Highest min temperature Highest min temp. | 66.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 53.1 ºF | - | |
Past weather June 2026 incomplete - Missing data
Geo Mason City - Iowa
| Country | United States | |
|---|---|---|
| State | Iowa | |
| County | Cerro Gordo | |
| City | Mason City | |
| Zip Code | 50401 | |
| Longitude | -93.2 dec. degr. | |
| Latitude | 43.15 dec. degr. | |
| Altitude - Elevation | 1138ft | |
| ICAO | - | |
| IATA | - |
Date and Time Mason City - Iowa
| Local Time | 03:45 AM | |
|---|---|---|
| Sunrise | 05:30 AM | |
| Sunset | 08:56 PM | |
| Day/Night | Night | |
| Timezone | Chicago -6:00 | |
| Timezone DB | America - Chicago |
Map of Mason City - Iowa
USGS National Map — Open interactive map
Mason City weather averages
| Annual high temperature | 56ºF |
| Annual low temperature | 35ºF |
| Average annual precip. | 35.2 inch |
| Av. annual snowfall | 41 inch |
Station Data
Monthly averages Mason City
Longitude: -93.2, Latitude: 43.15
Average weather Mason City, IA - 50401
Monthly: 1991-2020 normals
History: 2007-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...