The official National Weather Service forecast for Moultonborough — 43.7548°N, 71.3967°W, 13.2 miles from I-93.
| Carroll County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 33 | 41 | 54 | 67 | 74 | 80 | 78 | 71 | 57 | 45 | 34 | 55 |
| Avg low °F | 10 | 11 | 20 | 30 | 41 | 51 | 56 | 54 | 47 | 37 | 27 | 17 | 33 |
| Precip in | 3.6 | 3.3 | 4.0 | 4.5 | 4.3 | 4.9 | 4.7 | 4.4 | 4.0 | 5.5 | 4.3 | 4.9 | 52.4 |
1996–2025 normals for Carroll County — the climate division Moultonborough sits in. All-time county record high 97.1°F (1975-08-03); record low -30.6°F (1957-01-14). Source: NOAA / National Weather Service.