| NWS Forecast for: Londonderry NH Issued by: National Weather Service Gray/Portland, ME Last Update: 4:02 pm EDT Sep 5, 2026 | |
| Overnight: Scattered showers, mainly between 4am and 5am. Mostly cloudy, with a low around 53. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible. Sunday: Mostly sunny, with a high near 71. North wind around 5 mph. Sunday Night: Clear, with a low around 53. Calm wind becoming northwest 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 55. West wind around 5 mph. Tuesday: Sunny, with a high near 78. Tuesday Night: Partly cloudy, with a low around 55. Wednesday: Partly sunny, with a high near 75. Wednesday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 65. Chance of precipitation is 60%. Thursday: Partly sunny, with a high near 79. Thursday Night: Partly cloudy, with a low around 54. Friday: Sunny, with a high near 70. Friday Night: Mostly clear, with a low around 50. Saturday: Sunny, with a high near 72. | |
| Londonderry NH 42.86°N 71.37°W (Elev. 397 ft) | |
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