Swea City, IA
Climate overview — based on NOAA 1991-2020 normals from SWEA CITY 5N, IA US.
Year-round temperatures (°F)
Climate summary
Swea City has an annual average temperature of 43.8°F with about 32.9 inches of precipitation per year and 39.7 inches of snow. The warmest month is July (average high 80.8°F), and the coldest is January (average low 4.5°F). June is typically the wettest month (4.65 in) and January the driest (0.87 in). Snow typically falls from October through April.
Best time to visit Swea City
Full guide →Climate change signal
All-time records →48 of 366 (13.1%) of Swea City'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.
| 1950s | 38 | |
| 1960s | 49 | |
| 1970s | 44 | |
| 1980s | 52 | |
| 1990s | 47 | |
| 2000s | 65 | |
| 2010s | 34 | |
| 2020s | 37 |
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 | 21.9°F | 4.5°F | 13.2°F | 0.87 in | 10.9 in | 6 |
| February | 26.9°F | 8.1°F | 17.5°F | 0.93 in | 8.5 in | 5 |
| March | 39.7°F | 21.4°F | 30.5°F | 1.76 in | 4.6 in | 7 |
| April | 55.4°F | 32.5°F | 43.9°F | 3.43 in | 3.6 in | 10 |
| May | 67.7°F | 45.6°F | 56.6°F | 4.60 in | — | 12 |
| June | 77.8°F | 56.9°F | 67.3°F | 4.65 in | — | 11 |
| July | 80.8°F | 59.8°F | 70.3°F | 4.16 in | — | 9 |
| August | 78.3°F | 57.5°F | 67.9°F | 4.11 in | — | 8 |
| September | 72.6°F | 48.0°F | 60.3°F | 3.21 in | — | 8 |
| October | 58.7°F | 35.2°F | 46.9°F | 2.52 in | 0.7 in | 7 |
| November | 41.9°F | 22.1°F | 32.0°F | 1.46 in | 3.1 in | 6 |
| December | 27.6°F | 11.2°F | 19.4°F | 1.17 in | 8.3 in | 6 |
Climate twins of Swea City
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).