Loudon, NH Weather & Growing Conditions
Today
75°F
Mostly Sunny
Mostly sunny. High near 75, with temperatures falling to around 67 in the afternoon. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Tonight | 52°F | Partly Cloudy | 0 to 5 mph S | 2% |
| Thursday | 70°F | Mostly Cloudy then Light Rain Likely | 5 to 10 mph S | 55% |
| Thursday Night | 57°F | Chance Light Rain | 0 to 5 mph SW | 27% |
| Friday | 69°F | Light Rain Likely | 0 to 5 mph SW | 65% |
| Friday Night | 52°F | Light Rain | 0 to 5 mph NE | 84% |
| Saturday | 62°F | Light Rain Likely | 5 mph N | 70% |
| Saturday Night | 41°F | Chance Light Rain | 5 mph N | 38% |
| Sunday | 56°F | Chance Light Rain | 5 to 10 mph NW | 32% |
| Sunday Night | 33°F | Partly Cloudy | 5 mph W | 7% |
| Monday | 52°F | Mostly Sunny | 5 to 10 mph W | 12% |
| Monday Night | 30°F | Partly Cloudy | 5 mph W | 11% |
| Tuesday | 55°F | Mostly Sunny | 5 to 10 mph W | 8% |
| Tuesday Night | 30°F | Partly Cloudy | 5 to 10 mph W | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Loudon, NH
Last spring frost
May 8
First fall frost
Oct 3
Growing season
146 days
Hardiness zone
5b
Explore more for Loudon, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Concord Muni Ap, Nh (6.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.