Hot-summer humid continental climate
Climate Grinnell - Iowa
Annual high58ºF
Annual low36ºF
Precipitation36.59 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 29 | 10 | 0.99 | 8 |
| Feb | 34 | 13 | 1.41 | 8 |
| Mar | 46 | 24 | 2.34 | 4 |
| Apr | 60 | 35 | 3.59 | 1 |
| May | 70 | 46 | 4.47 | 0 |
| Jun | 80 | 57 | 4.84 | 0 |
| Jul | 84 | 61 | 4.34 | 0 |
| Aug | 82 | 59 | 4.58 | 0 |
| Sep | 75 | 49 | 3.47 | 0 |
| Oct | 62 | 37 | 2.81 | 0 |
| Nov | 47 | 26 | 2.28 | 1 |
| Dec | 32 | 14 | 1.47 | 8 |
- JanHigh 29ºFLow 10ºFPrecip 0.99 inch
- FebHigh 34ºFLow 13ºFPrecip 1.41 inch
- MarHigh 46ºFLow 24ºFPrecip 2.34 inch
- AprHigh 60ºFLow 35ºFPrecip 3.59 inch
- MayHigh 70ºFLow 46ºFPrecip 4.47 inch
- JunHigh 80ºFLow 57ºFPrecip 4.84 inch
- JulHigh 84ºFLow 61ºFPrecip 4.34 inch
- AugHigh 82ºFLow 59ºFPrecip 4.58 inch
- SepHigh 75ºFLow 49ºFPrecip 3.47 inch
- OctHigh 62ºFLow 37ºFPrecip 2.81 inch
- NovHigh 47ºFLow 26ºFPrecip 2.28 inch
- DecHigh 32ºFLow 14ºFPrecip 1.47 inch
Climate summary
What is the average weather in Grinnell, Iowa?
Grinnell experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm and fairly wet, with the most precipitation arriving in summer. Winters are cold and snowy, bringing significant snowfall, while winter is also the driest season overall.
Grinnell weather averages
Annual high58ºF
Annual low36ºF
Precipitation36.59 inch
Snowfall30 inch
Daily normals Grinnell - Iowa - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 29.4 | 12.3 | 0.04 | 0.04 | 0.20 | 0.20 |
| Jan 2 | 29.2 | 12.1 | 0.08 | 0.08 | 0.50 | 0.50 |
| Jan 3 | 29.0 | 11.8 | 0.12 | 0.12 | 0.80 | 0.80 |
| Jan 4 | 28.9 | 11.6 | 0.15 | 0.15 | 1.00 | 1.00 |
| Jan 5 | 28.7 | 11.4 | 0.19 | 0.19 | 1.30 | 1.30 |
| Jan 6 | 28.6 | 11.2 | 0.22 | 0.22 | 1.50 | 1.50 |
| Jan 7 | 28.4 | 11.1 | 0.26 | 0.26 | 1.80 | 1.80 |
| Jan 8 | 28.3 | 10.9 | 0.29 | 0.29 | 2.10 | 2.10 |
| Jan 9 | 28.2 | 10.7 | 0.33 | 0.33 | 2.40 | 2.40 |
| Jan 10 | 28.1 | 10.5 | 0.36 | 0.36 | 2.70 | 2.70 |
| Jan 11 | 28.0 | 10.4 | 0.39 | 0.39 | 2.90 | 2.90 |
| Jan 12 | 28.0 | 10.2 | 0.43 | 0.43 | 3.20 | 3.20 |
| Jan 13 | 27.9 | 10.1 | 0.46 | 0.46 | 3.50 | 3.50 |
| Jan 14 | 27.9 | 10.0 | 0.49 | 0.49 | 3.90 | 3.90 |
| Jan 15 | 27.8 | 9.8 | 0.52 | 0.52 | 4.10 | 4.10 |
| Jan 16 | 27.8 | 9.7 | 0.56 | 0.56 | 4.40 | 4.40 |
| Jan 17 | 27.8 | 9.6 | 0.59 | 0.59 | 4.70 | 4.70 |
| Jan 18 | 27.8 | 9.6 | 0.62 | 0.62 | 5.00 | 5.00 |
| Jan 19 | 27.8 | 9.5 | 0.66 | 0.66 | 5.30 | 5.30 |
| Jan 20 | 27.9 | 9.4 | 0.70 | 0.70 | 5.60 | 5.60 |
| Jan 21 | 27.9 | 9.4 | 0.73 | 0.73 | 5.90 | 5.90 |
| Jan 22 | 27.9 | 9.4 | 0.76 | 0.76 | 6.20 | 6.20 |
| Jan 23 | 28.0 | 9.3 | 0.80 | 0.80 | 6.50 | 6.50 |
| Jan 24 | 28.1 | 9.3 | 0.83 | 0.83 | 6.80 | 6.80 |
| Jan 25 | 28.2 | 9.4 | 0.87 | 0.87 | 7.10 | 7.10 |
| Jan 26 | 28.3 | 9.4 | 0.91 | 0.91 | 7.40 | 7.40 |
| Jan 27 | 28.4 | 9.4 | 0.94 | 0.94 | 7.70 | 7.70 |
| Jan 28 | 28.5 | 9.5 | 0.98 | 0.98 | 8.00 | 8.00 |
| Jan 29 | 28.6 | 9.6 | 1.02 | 1.02 | 8.40 | 8.40 |
| Jan 30 | 28.8 | 9.7 | 1.06 | 1.06 | 8.70 | 8.70 |
| Jan 31 | 29.0 | 9.8 | 1.10 | 1.10 | 9.00 | 9.00 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Grinnell - November 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Nov 1 | 63.0 | 53.1 | – |
| Nov 2 | 64.9 | 57.0 | T |
| Nov 3 | 64.9 | 57.0 | 1.76 |
| Nov 4 | 68.0 | 46.9 | 0.64 |
| Nov 5 | 51.1 | 45.0 | 0.04 |
| Nov 6 | 55.9 | 34.0 | 0.03 |
| Nov 7 | – | – | – |
| Nov 8 | – | – | – |
| Nov 9 | – | – | – |
| Nov 10 | – | – | – |
| Nov 11 | – | – | – |
| Nov 12 | – | – | – |
| Nov 13 | – | – | – |
| Nov 14 | – | – | – |
| Nov 15 | – | – | – |
| Nov 16 | – | – | – |
| Nov 17 | – | – | – |
| Nov 18 | – | – | – |
| Nov 19 | – | – | – |
| Nov 20 | – | – | – |
| Nov 21 | – | – | – |
| Nov 22 | – | – | – |
| Nov 23 | – | – | – |
| Nov 24 | – | – | – |
| Nov 25 | – | – | – |
| Nov 26 | – | – | – |
| Nov 27 | – | – | – |
| Nov 28 | – | – | – |
| Nov 29 | – | – | – |
| Nov 30 | – | – | – |
The data for November 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature68.0ºF · Nov 4
- Lowest max temperature51.1ºF · Nov 5
- Highest min temperature57.0ºF · Nov 2
- Lowest min temperature34.0ºF · Nov 6
Geo Grinnell - Iowa
Location
- Country
- United States
- State
- Iowa
- County
- Poweshiek
- City
- Grinnell
- Zip Code
- 50112
- Elevation
- 1001 ft
- Longitude
- -92.74
- Latitude
- 41.71
- ICAO
- –
- IATA
- –