Weather in Londonderry, NH
Londonderry, Tuesday, 20 October, 23:01
Clear. Feels like 42°. High 65°, low 38°.
Monthly outlook for Londonderry, NH: average high 56.6°, average low 36°. That is 0.6° above the climate normal for October. Precipitation is expected on 1 day (about 1.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 27 October (67.7°), the coolest 29 October (29.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 59.2° | 56.5° | +1.5° |
| 30 October – 8 November | 52.2° | 52.9° | -0.4° |
| 9 November – 18 November | at normal | 47.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Manchester (8 mi).
0
Londonderry, Wednesday, 21 October
Partly cloudy. High 58°, low 34°.
0
Londonderry, Thursday, 22 October
Overcast. High 64°, low 36°.
0
Londonderry, Friday, 23 October
Clear. High 52°, low 37°.
0Londonderry, Saturday, 24 October
Clear. High 57°, low 33°.
0Londonderry, Sunday, 25 October
Clear. High 64°, low 36°.
0Londonderry, Monday, 26 October
Clear. High 66°, low 39°.
0Londonderry, Tuesday, 27 October
Overcast. High 68°, low 47°.
0Londonderry, Wednesday, 28 October
Overcast. High 49°, low 33°.
0
Londonderry, Thursday, 29 October
Light rain. High 50°, low 30°.
0.02Londonderry, Friday, 30 October
Light rain. High 54°, low 40°.
0Londonderry, Saturday, 31 October
Clear. High 48°, low 32°.
0Londonderry, Sunday, 1 November
Overcast. High 57°, low 31°.
0.99Londonderry, Monday, 2 November
Heavy rain. High 62°, low 44°.
0Londonderry, Tuesday, 3 November
Overcast. High 47°, low 35°.
0Londonderry, Wednesday, 4 November
Clear. High 44°, low 30°.
0.17
Londonderry, Thursday, 5 November
Climate normal for this date — 60-year average.
0.13Londonderry, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Londonderry, Saturday, 7 November
Climate normal for this date — 60-year average.
0.1Londonderry, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Londonderry, Monday, 9 November
Climate normal for this date — 60-year average.
0.16Londonderry, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13Londonderry, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.12Londonderry, Thursday, 12 November
Climate normal for this date — 60-year average.
0.15Londonderry, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Londonderry, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Londonderry, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Londonderry, Monday, 16 November
Climate normal for this date — 60-year average.
0.13Londonderry, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Londonderry, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Londonderry, NH are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Londonderry, NH since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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