The official National Weather Service forecast for Waverly — 42.7258°N, 92.4755°W, population 9,159, 18.9 miles from I-380.
| Bremer County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 30 | 44 | 59 | 70 | 80 | 83 | 81 | 75 | 62 | 46 | 32 | 57 |
| Avg low °F | 9 | 12 | 25 | 35 | 48 | 58 | 62 | 59 | 51 | 39 | 27 | 16 | 37 |
| Precip in | 1.1 | 1.2 | 2.0 | 3.7 | 5.0 | 5.9 | 4.5 | 4.1 | 3.5 | 2.8 | 1.7 | 1.5 | 37.0 |
1996–2025 normals for Bremer County — the climate division Waverly sits in. All-time county record high 103.0°F (1988-08-18); record low -31.2°F (1962-03-01). Source: NOAA / National Weather Service.