Barnum, IA
Climate overview — based on NOAA 1991-2020 normals from FT DODGE 5NNW, IA US.
Year-round temperatures (°F)
Climate summary
Barnum has an annual average temperature of 46.5°F with about 35.1 inches of precipitation per year and 39 inches of snow. The warmest month is July (average high 82.7°F), and the coldest is January (average low 7.4°F). June is typically the wettest month (5.53 in) and January the driest (0.95 in). Snow typically falls from October through May.
Best time to visit Barnum
Full guide →Climate change signal
All-time records →20 of 366 (5.5%) of Barnum'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 | 1 | |
| 1900s | 12 | |
| 1910s | 35 | |
| 1920s | 27 | |
| 1930s | 80 | |
| 1940s | 28 | |
| 1950s | 27 | |
| 1960s | 16 | |
| 1970s | 17 | |
| 1980s | 46 | |
| 1990s | 22 | |
| 2000s | 21 | |
| 2010s | 22 | |
| 2020s | 12 |
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 | 25.5°F | 7.4°F | 16.4°F | 0.95 in | 8.6 in | 6 |
| February | 30.5°F | 11.5°F | 21.0°F | 1.23 in | 11.8 in | 7 |
| March | 43.9°F | 23.8°F | 33.8°F | 1.96 in | 5.6 in | 8 |
| April | 58.8°F | 34.8°F | 46.8°F | 3.72 in | 1.5 in | 10 |
| May | 69.9°F | 47.5°F | 58.7°F | 4.57 in | 0.4 in | 13 |
| June | 79.7°F | 58.4°F | 69.0°F | 5.53 in | — | 11 |
| July | 82.7°F | 62.0°F | 72.4°F | 4.20 in | — | 9 |
| August | 80.3°F | 59.5°F | 69.9°F | 4.26 in | — | 9 |
| September | 74.2°F | 50.5°F | 62.3°F | 2.81 in | — | 8 |
| October | 61.3°F | 37.7°F | 49.5°F | 2.55 in | 0.4 in | 8 |
| November | 45.1°F | 25.1°F | 35.1°F | 1.85 in | 2.8 in | 6 |
| December | 31.3°F | 14.1°F | 22.7°F | 1.46 in | 7.9 in | 7 |
Climate twins of Barnum
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).