Hot-summer humid continental climate
Climate Denison - Iowa
Annual high60ºF
Annual low39ºF
Precipitation32.26 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 30 | 11 | 0.72 | 8 |
| Feb | 35 | 16 | 0.78 | 7 |
| Mar | 47 | 26 | 2.07 | 6 |
| Apr | 61 | 37 | 3.30 | 2 |
| May | 72 | 50 | 4.44 | 0 |
| Jun | 82 | 60 | 4.87 | 0 |
| Jul | 85 | 65 | 4.27 | 0 |
| Aug | 83 | 63 | 3.86 | 0 |
| Sep | 76 | 53 | 3.04 | 0 |
| Oct | 64 | 41 | 2.41 | 0 |
| Nov | 47 | 28 | 1.49 | 3 |
| Dec | 33 | 15 | 1.01 | 10 |
- JanHigh 30ºFLow 11ºFPrecip 0.72 inch
- FebHigh 35ºFLow 16ºFPrecip 0.78 inch
- MarHigh 47ºFLow 26ºFPrecip 2.07 inch
- AprHigh 61ºFLow 37ºFPrecip 3.30 inch
- MayHigh 72ºFLow 50ºFPrecip 4.44 inch
- JunHigh 82ºFLow 60ºFPrecip 4.87 inch
- JulHigh 85ºFLow 65ºFPrecip 4.27 inch
- AugHigh 83ºFLow 63ºFPrecip 3.86 inch
- SepHigh 76ºFLow 53ºFPrecip 3.04 inch
- OctHigh 64ºFLow 41ºFPrecip 2.41 inch
- NovHigh 47ºFLow 28ºFPrecip 1.49 inch
- DecHigh 33ºFLow 15ºFPrecip 1.01 inch
Climate summary
What is the average weather in Denison, Iowa?
Denison experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm and bring the most precipitation, contributing to the moderate annual total. Winters are cold, with significant snowfall. Precipitation is spread relatively evenly throughout the year, with winter moisture often arriving as snow.
Denison weather averages
Annual high60ºF
Annual low39ºF
Precipitation32.26 inch
Snowfall36 inch
Daily normals Denison - Iowa - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 27.9 | 11.7 | 0.02 | 0.02 | 0.30 | 0.30 |
| Jan 2 | 27.8 | 11.5 | 0.05 | 0.05 | 0.50 | 0.50 |
| Jan 3 | 27.7 | 11.2 | 0.07 | 0.07 | 0.80 | 0.80 |
| Jan 4 | 27.5 | 11.0 | 0.10 | 0.10 | 1.00 | 1.00 |
| Jan 5 | 27.4 | 10.8 | 0.13 | 0.13 | 1.30 | 1.30 |
| Jan 6 | 27.3 | 10.6 | 0.15 | 0.15 | 1.50 | 1.50 |
| Jan 7 | 27.3 | 10.5 | 0.18 | 0.18 | 1.80 | 1.80 |
| Jan 8 | 27.2 | 10.3 | 0.20 | 0.20 | 2.00 | 2.00 |
| Jan 9 | 27.1 | 10.1 | 0.23 | 0.23 | 2.30 | 2.30 |
| Jan 10 | 27.1 | 10.0 | 0.25 | 0.25 | 2.50 | 2.50 |
| Jan 11 | 27.0 | 9.8 | 0.28 | 0.28 | 2.70 | 2.70 |
| Jan 12 | 27.0 | 9.7 | 0.30 | 0.30 | 3.00 | 3.00 |
| Jan 13 | 27.0 | 9.6 | 0.32 | 0.32 | 3.30 | 3.30 |
| Jan 14 | 27.0 | 9.5 | 0.34 | 0.34 | 3.50 | 3.50 |
| Jan 15 | 27.0 | 9.4 | 0.37 | 0.37 | 3.80 | 3.80 |
| Jan 16 | 27.0 | 9.3 | 0.39 | 0.39 | 4.00 | 4.00 |
| Jan 17 | 27.0 | 9.2 | 0.41 | 0.41 | 4.30 | 4.30 |
| Jan 18 | 27.1 | 9.2 | 0.43 | 0.43 | 4.50 | 4.50 |
| Jan 19 | 27.1 | 9.1 | 0.45 | 0.45 | 4.80 | 4.80 |
| Jan 20 | 27.2 | 9.1 | 0.48 | 0.48 | 5.10 | 5.10 |
| Jan 21 | 27.2 | 9.1 | 0.50 | 0.50 | 5.30 | 5.30 |
| Jan 22 | 27.3 | 9.1 | 0.52 | 0.52 | 5.60 | 5.60 |
| Jan 23 | 27.4 | 9.1 | 0.55 | 0.55 | 5.90 | 5.90 |
| Jan 24 | 27.5 | 9.1 | 0.57 | 0.57 | 6.20 | 6.20 |
| Jan 25 | 27.5 | 9.2 | 0.59 | 0.59 | 6.50 | 6.50 |
| Jan 26 | 27.7 | 9.2 | 0.62 | 0.62 | 6.70 | 6.70 |
| Jan 27 | 27.8 | 9.3 | 0.64 | 0.64 | 7.00 | 7.00 |
| Jan 28 | 27.9 | 9.4 | 0.67 | 0.67 | 7.30 | 7.30 |
| Jan 29 | 28.0 | 9.5 | 0.69 | 0.69 | 7.60 | 7.60 |
| Jan 30 | 28.2 | 9.6 | 0.71 | 0.71 | 7.80 | 7.80 |
| Jan 31 | 28.3 | 9.8 | 0.74 | 0.74 | 8.10 | 8.10 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Denison - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | – | – | – |
| Oct 2 | – | – | – |
| Oct 3 | – | – | – |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | – | – | – |
| Oct 9 | – | – | 0.00 |
| Oct 10 | – | – | – |
| Oct 11 | – | – | – |
| Oct 12 | – | – | – |
| Oct 13 | – | – | – |
| Oct 14 | – | – | – |
| Oct 15 | – | – | – |
| Oct 16 | – | – | – |
| Oct 17 | – | – | – |
| Oct 18 | – | – | – |
| Oct 19 | – | – | – |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | – | – | – |
| Oct 23 | – | – | – |
| Oct 24 | – | – | – |
| Oct 25 | – | – | – |
| Oct 26 | – | – | – |
| Oct 27 | – | – | – |
| Oct 28 | – | – | – |
| Oct 29 | – | – | – |
| Oct 30 | – | – | – |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
Geo Denison - Iowa
Location
- Country
- United States
- State
- Iowa
- County
- Crawford
- City
- Denison
- Zip Code
- 51442
- Elevation
- 1266 ft
- Longitude
- -95.38
- Latitude
- 41.99
- ICAO
- –
- IATA
- –