The official National Weather Service forecast for New London — 41.0851°N, 82.3999°W, 18.1 miles from I-90.
| Huron County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 37 | 47 | 60 | 71 | 80 | 83 | 81 | 76 | 64 | 50 | 39 | 60 |
| Avg low °F | 19 | 21 | 29 | 38 | 49 | 59 | 62 | 61 | 54 | 43 | 33 | 25 | 41 |
| Precip in | 2.6 | 2.3 | 2.9 | 3.7 | 4.1 | 4.3 | 4.0 | 3.6 | 3.4 | 3.2 | 2.6 | 2.7 | 39.4 |
1996–2025 normals for Huron County — the climate division New London sits in. All-time county record high 100.4°F (1988-06-26); record low -22.6°F (1994-01-19). Source: NOAA / National Weather Service.