| NWS Forecast for: Londonderry NH Issued by: National Weather Service Gray/Portland, ME Last Update: 2:25 pm EDT Sep 6, 2026 |  |
| Overnight: Mostly clear, with a low around 51. Northwest wind around 5 mph. Labor Day: Sunny, with a high near 77. Northwest wind 5 to 10 mph. Monday Night: Mostly clear, with a low around 56. West wind around 5 mph. Tuesday: Mostly sunny, with a high near 78. Northwest wind around 5 mph. Tuesday Night: Mostly cloudy, with a low around 54. Calm wind. Wednesday: Mostly cloudy, with a high near 75. Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 65. Thursday: A 30 percent chance of showers before 9am. Partly sunny, with a high near 80. Thursday Night: Mostly cloudy, with a low around 57. Friday: Mostly sunny, with a high near 74. Friday Night: Mostly clear, with a low around 52. Saturday: Sunny, with a high near 75. Saturday Night: Partly cloudy, with a low around 56. Sunday: Mostly sunny, with a high near 79. | |
| Londonderry NH 42.86°N 71.37°W (Elev. 397 ft) | |
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