The official National Weather Service forecast for Tekonsha — 42.0934°N, 84.9858°W, 0.8 miles from I-69. Forecasts here are written by NWS GRR, this county’s forecast office.
| Calhoun County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 35 | 46 | 59 | 70 | 79 | 83 | 80 | 74 | 61 | 48 | 36 | 58 |
| Avg low °F | 17 | 18 | 27 | 36 | 47 | 57 | 60 | 59 | 52 | 41 | 31 | 23 | 39 |
| Precip in | 2.3 | 2.0 | 2.4 | 3.3 | 4.3 | 4.1 | 3.7 | 3.6 | 3.0 | 3.6 | 2.4 | 2.3 | 37.0 |
1996–2025 normals for Calhoun County — the climate division Tekonsha sits in. All-time county record high 103.1°F (2012-07-07); record low -19.4°F (1994-01-19). Source: NOAA / National Weather Service.