Climate Decorah - Iowa
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 27 | 33 | 46 | 61 | 72 | 81 |
| Average low in ºF Av. low Lo | 9 | 13 | 25 | 36 | 47 | 56 |
| Av. precipitation in inch Av. precip. Pre. | 0.89 | 0.89 | 1.91 | 3.61 | 4.19 | 5.16 |
| Av. snowfall in inch Snowfall Sn | 9 | 8 | 5 | 1 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 84 | 82 | 75 | 62 | 46 | 30 |
| Average low in ºF Av. low Lo | 61 | 59 | 50 | 39 | 27 | 13 |
| Av. precipitation in inch Av. precip. Pre. | 4.27 | 4.74 | 3.33 | 2.36 | 2.11 | 1.22 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 3 | 11 |
What is the average weather in Decorah, Iowa?
Decorah experiences a humid continental climate, marked by very strong seasonal contrasts. Summers are warm and bring the most precipitation, while winters are cold and snowy. Significant snowfall is a notable feature, with winter moisture often arriving as snow. Precipitation is moderate overall, spread relatively evenly throughout the year.
Decorah Climate Graph - Iowa Climate Chart
Daily normals Decorah - Iowa - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 28.5 | 12.8 | 0.04 | 0.04 | 0.20 | 0.20 |
| 2 Jan | 28.3 | 12.6 | 0.07 | 0.07 | 0.50 | 0.50 |
| 3 Jan | 28.2 | 12.3 | 0.11 | 0.11 | 0.70 | 0.70 |
| 4 Jan | 28.1 | 12.1 | 0.15 | 0.15 | 1.00 | 1.00 |
| 5 Jan | 27.9 | 11.8 | 0.19 | 0.19 | 1.30 | 1.30 |
| 6 Jan | 27.8 | 11.6 | 0.22 | 0.22 | 1.50 | 1.50 |
| 7 Jan | 27.7 | 11.4 | 0.26 | 0.26 | 1.80 | 1.80 |
| 8 Jan | 27.6 | 11.2 | 0.29 | 0.29 | 2.10 | 2.10 |
| 9 Jan | 27.5 | 11.0 | 0.32 | 0.32 | 2.30 | 2.30 |
| 10 Jan | 27.4 | 10.8 | 0.35 | 0.35 | 2.60 | 2.60 |
| 11 Jan | 27.4 | 10.6 | 0.39 | 0.39 | 2.90 | 2.90 |
| 12 Jan | 27.3 | 10.4 | 0.42 | 0.42 | 3.30 | 3.30 |
| 13 Jan | 27.3 | 10.3 | 0.45 | 0.45 | 3.60 | 3.60 |
| 14 Jan | 27.3 | 10.1 | 0.48 | 0.48 | 3.90 | 3.90 |
| 15 Jan | 27.2 | 10.0 | 0.51 | 0.51 | 4.30 | 4.30 |
| 16 Jan | 27.2 | 9.9 | 0.54 | 0.54 | 4.60 | 4.60 |
| 17 Jan | 27.2 | 9.8 | 0.57 | 0.57 | 4.90 | 4.90 |
| 18 Jan | 27.3 | 9.7 | 0.60 | 0.60 | 5.30 | 5.30 |
| 19 Jan | 27.3 | 9.6 | 0.63 | 0.63 | 5.70 | 5.70 |
| 20 Jan | 27.3 | 9.5 | 0.66 | 0.66 | 6.10 | 6.10 |
| 21 Jan | 27.4 | 9.5 | 0.69 | 0.69 | 6.40 | 6.40 |
| 22 Jan | 27.4 | 9.4 | 0.72 | 0.72 | 6.80 | 6.80 |
| 23 Jan | 27.5 | 9.4 | 0.75 | 0.75 | 7.20 | 7.20 |
| 24 Jan | 27.6 | 9.4 | 0.79 | 0.79 | 7.60 | 7.60 |
| 25 Jan | 27.7 | 9.4 | 0.82 | 0.82 | 8.00 | 8.00 |
| 26 Jan | 27.8 | 9.5 | 0.85 | 0.85 | 8.40 | 8.40 |
| 27 Jan | 28.0 | 9.5 | 0.88 | 0.88 | 8.80 | 8.80 |
| 28 Jan | 28.1 | 9.6 | 0.91 | 0.91 | 9.10 | 9.10 |
| 29 Jan | 28.3 | 9.7 | 0.95 | 0.95 | 9.50 | 9.50 |
| 30 Jan | 28.4 | 9.8 | 0.98 | 0.98 | 9.90 | 9.90 |
| 31 Jan | 28.6 | 9.9 | 1.01 | 1.01 | 10.30 | 10.30 |
Weather history Decorah - September 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Sep | 90.0 | 66.0 | 0.00 | 0.00 | 0.0 |
| 02 Sep | 90.0 | 69.1 | 0.00 | 0.00 | 0.0 |
| 03 Sep | 87.1 | 68.0 | 0.30 | 0.00 | 0.0 |
| 04 Sep | 91.0 | 70.0 | 0.00 | 0.00 | 0.0 |
| 05 Sep | - | - | - | - | - |
| 06 Sep | 82.0 | 66.0 | 0.01 | 0.00 | 0.0 |
| 07 Sep | 81.0 | 64.9 | 0.00 | 0.00 | 0.0 |
| 08 Sep | 80.1 | 64.9 | 0.23 | 0.00 | 0.0 |
| 09 Sep | 82.0 | 64.0 | 0.18 | 0.00 | 0.0 |
| 10 Sep | 80.1 | 57.0 | 0.00 | 0.00 | 0.0 |
| 11 Sep | 84.9 | 52.0 | 0.00 | 0.00 | 0.0 |
| 12 Sep | 82.0 | 66.0 | 0.00 | 0.00 | 0.0 |
| 13 Sep | 78.1 | 48.0 | 0.00 | 0.00 | 0.0 |
| 14 Sep | - | - | - | - | - |
| 15 Sep | - | - | - | - | - |
| 16 Sep | 75.0 | 52.0 | 0.00 | 0.00 | 0.0 |
| 17 Sep | 75.0 | 63.0 | 0.04 | 0.00 | 0.0 |
| 18 Sep | 69.1 | 57.9 | 0.27 | 0.00 | 0.0 |
| 19 Sep | 66.0 | 59.0 | 4.81 | 0.00 | 0.0 |
| 20 Sep | - | - | - | - | - |
| 21 Sep | - | - | - | - | - |
| 22 Sep | - | - | - | - | - |
| 23 Sep | - | - | - | - | - |
| 24 Sep | - | - | - | - | - |
| 25 Sep | - | - | - | - | - |
| 26 Sep | - | - | - | - | - |
| 27 Sep | - | - | - | - | - |
| 28 Sep | - | - | - | - | - |
| 29 Sep | - | - | - | - | - |
| 30 Sep | - | - | - | - | - |
Past weather Decorah
| Sep 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 80.8 ºF | 27 ºF | |
| Average low temperature Av. low temp. | 61.7 ºF | 9 ºF | |
| Total precipitation Total precip. | 5.84 inch | 0.89 inch | |
| Total snowfall Total snowfall | 0.00 inch | 9 inch | |
| Highest max temperature Highest max temp. | 91.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 66.0 ºF | - | |
| Highest min temperature Highest min temp. | 70.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 48.0 ºF | - | |
Past weather September 2026 incomplete - Missing data
Geo Decorah - Iowa
| Country | United States | |
|---|---|---|
| State | Iowa | |
| County | Winneshiek | |
| City | Decorah | |
| Zip Code | 52101 | |
| Longitude | -91.74 dec. degr. | |
| Latitude | 43.28 dec. degr. | |
| Altitude - Elevation | 1152ft | |
| ICAO | - | |
| IATA | - |
Date and Time Decorah - Iowa
| Local Time | 08:10 PM | |
|---|---|---|
| Sunrise | 06:53 AM | |
| Sunset | 07:05 PM | |
| Day/Night | Night | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Decorah - Iowa
USGS National Map — Open interactive map
Decorah weather averages
| Annual high temperature | 58ºF |
| Annual low temperature | 36ºF |
| Average annual precip. | 34.68 inch |
| Av. annual snowfall | 37 inch |
Station Data
Monthly averages Decorah
Longitude: -91.7394, Latitude: 43.2755
Average weather Decorah, IA - 52101
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, ...