West Branch, IA
Climate overview — based on NOAA 1991-2020 normals from IOWA CITY, IA US.
Year-round temperatures (°F)
Climate summary
West Branch has an annual average temperature of 48.9°F with about 38.5 inches of precipitation per year and 27.5 inches of snow. The warmest month is July (average high 84.4°F), and the coldest is January (average low 11.6°F). June is typically the wettest month (5.49 in) and January the driest (1.14 in). Snow typically falls from October through April.
Best time to visit West Branch
Full guide →Climate change signal
All-time records →38 of 366 (10.4%) of West Branch's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 19 | |
| 1900s | 28 | |
| 1910s | 23 | |
| 1920s | 20 | |
| 1930s | 61 | |
| 1940s | 14 | |
| 1950s | 24 | |
| 1960s | 13 | |
| 1970s | 11 | |
| 1980s | 42 | |
| 1990s | 20 | |
| 2000s | 29 | |
| 2010s | 37 | |
| 2020s | 25 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 29.3°F | 11.6°F | 20.5°F | 1.14 in | 7.6 in | 7 |
| February | 34.3°F | 15.5°F | 24.9°F | 1.40 in | 7.5 in | 7 |
| March | 47.9°F | 26.6°F | 37.2°F | 2.33 in | 3.2 in | 9 |
| April | 61.6°F | 37.1°F | 49.4°F | 3.86 in | 0.5 in | 11 |
| May | 72.2°F | 48.9°F | 60.6°F | 5.05 in | — | 13 |
| June | 81.0°F | 59.0°F | 70.0°F | 5.49 in | — | 11 |
| July | 84.4°F | 62.5°F | 73.5°F | 4.56 in | — | 9 |
| August | 82.4°F | 60.2°F | 71.3°F | 4.32 in | — | 9 |
| September | 76.3°F | 51.6°F | 64.0°F | 3.45 in | — | 8 |
| October | 63.2°F | 39.9°F | 51.6°F | 3.00 in | 0.4 in | 9 |
| November | 47.5°F | 27.6°F | 37.5°F | 2.27 in | 1.1 in | 8 |
| December | 34.4°F | 17.5°F | 26.0°F | 1.60 in | 7.2 in | 8 |
Climate twins of West Branch
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).