Observed 10:05 PM EDT at KMHT

Londonderry, NH weather

Clear and 37°3°.

Mostly agree

Now 37°3°

Clear

Wind: Calm; Light through 10 AM
Dew point: 30°−1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Pressure: 30.52 inHg1034 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below freezing tonight 5–9 AM (low 32°0°)
Low 32°0° tonight at 5 AM
Above 50°10° tomorrow by 11 AM
High 64°18° tomorrow at 3 PM
Below 50°10° tomorrow night after 8 PM

TonightDown to 32°0° by 5 AM · freezing, low 32°0° · Clear
Tomorrow morningUp to 54°12° by 11 AM · freezing, low 32°0° · Clear
Tomorrow afternoonUp to 64°18° by 3 PM · Clear
Tomorrow nightDown to 37°3° by 4 AM · Clear
Monday morningUp to 55°13° by 11 AM · Partly cloudy
Monday afternoonUp to 68°20° by 3 PM · Clear
Monday nightDown to 52°11° by 9 PM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 10p	Clear	42°6° (likely 39°4° to 42°6°)	42°6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	65%	0%	0
Sat 11p	Clear	40°4° (likely 38°3° to 40°4°)	40°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	70%	0%	0
Sun 12a	Clear	39°4° (likely 37°3° to 39°4°)	39°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	70%	0%	0
Sun 1a	Clear	37°3° (likely 35°2° to 37°3°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	75%	0%	0
Sun 2a	Clear	36°2° (likely 34°1° to 37°3°)	36°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	79%	0%	0
Sun 3a	Clear	34°1° (likely 33°1° to 36°2°)	34°1°	0%	0 mph0 km/h, gusts 5 mph8 km/h	85%	0%	0
Sun 4a	Clear	33°1° (likely 32°0° to 36°2°)	33°1°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	0%	0
Sun 5a	Clear	32°0° (likely 31°−1° to 35°2°)	32°0°	0%	0 mph0 km/h, gusts 6 mph9 km/h	88%	0%	0
Sun 6a	Clear	32°0° (likely 29°−2° to 35°2°)	32°0°	0%	0 mph0 km/h, gusts 7 mph12 km/h	88%	0%	0
Sun 7a	Sunny	32°0° (likely 28°−2° to 35°2°)	32°0°	0%	0 mph0 km/h, gusts 7 mph11 km/h	88%	5%	0
Sun 8a	Sunny	32°0° (likely 29°−2° to 37°3°)	32°0°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	10%	0
Sun 9a	Sunny	40°4° (likely 38°3° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 7 mph11 km/h	76%	0%	1
Sun 10a	Sunny	47°8° (likely 47°8° to 49°9°)	47°8°	0%	0 mph0 km/h, gusts 8 mph13 km/h	63%	0%	2
Sun 11a	Sunny	54°12° (likely 54°12° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 7 mph11 km/h	50%	0%	3
Sun 12p	Sunny	58°14° (likely 58°14° to 61°16°)	58°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	44%	0%	4
Sun 1p	Sunny	62°17° (likely 61°16° to 64°18°)	62°17°	0%	0 mph0 km/h, gusts 8 mph13 km/h	35%	0%	4
Sun 2p	Sunny	63°17° (likely 63°17° to 65°18°)	63°17°	0%	0 mph0 km/h, gusts 9 mph14 km/h	35%	0%	4
Sun 3p	Sunny	64°18° (likely 64°18° to 65°18°)	64°18°	0%	0 mph0 km/h, gusts 9 mph14 km/h	34%	0%	3
Sun 4p	Sunny	63°17° (likely 62°17° to 65°18°)	63°17°	0%	0 mph0 km/h, gusts 9 mph15 km/h	36%	0%	2
Sun 5p	Sunny	61°16° (likely 58°14° to 62°17°)	61°16°	0%	0 mph0 km/h, gusts 10 mph15 km/h	41%	0%	1
Sun 6p	Clear	56°13° (likely 52°11° to 56°13°)	56°13°	0%	0 mph0 km/h, gusts 9 mph14 km/h	49%	0%	0
Sun 7p	Clear	52°11° (likely 49°9° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 10 mph15 km/h	59%	0%	0
Sun 8p	Clear	49°9° (likely 47°8° to 49°9°)	49°9°	0%	0 mph0 km/h, gusts 9 mph14 km/h	63%	0%	0
Sun 9p	Clear	46°8° (likely 45°7° to 46°8°)	46°8°	0%	0 mph0 km/h, gusts 8 mph13 km/h	71%	0%	0
Sun 10p	Clear	44°7° (likely 41°5° to 45°7°)	44°7°	0%	0 mph0 km/h, gusts 8 mph12 km/h	76%	0%	0
Sun 11p	Clear	42°6° (likely 39°4° to 43°6°)	42°6°	0%	0 mph0 km/h, gusts 7 mph12 km/h	82%	0%	0
Mon 12a	Clear	41°5° (likely 37°3° to 42°6°)	41°5°	0%	0 mph0 km/h, gusts 7 mph12 km/h	82%	0%	0
Mon 1a	Clear	40°4° (likely 36°2° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 7 mph12 km/h	82%	0%	0
Mon 2a	Clear	39°4° (likely 34°1° to 41°5°)	39°4°	0%	0 mph0 km/h, gusts 8 mph13 km/h	82%	0%	0
Mon 3a	Clear	38°3° (likely 33°1° to 40°4°)	38°3°	0%	0 mph0 km/h, gusts 7 mph12 km/h	85%	21%	0
Mon 4a	Mostly clear	37°3° (likely 32°0° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	89%	33%	0
Mon 5a	Clear	37°3° (likely 31°−1° to 39°4°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	85%	11%	0
Mon 6a	Clear	37°3° (likely 31°−1° to 39°4°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	85%	10%	0
Mon 7a	Mostly sunny	37°3° (likely 31°−1° to 39°4°)	34°1°	0%	5 mph8 km/h from W, gusts 5 mph9 km/h	85%	19%	0
Mon 8a	Sunny	37°3° (likely 32°0° to 41°5°)	34°1°	0%	5 mph8 km/h from W, gusts 5 mph8 km/h	89%	8%	0
Mon 9a	Sunny	43°6° (likely 39°4° to 45°7°)	41°5°	0%	5 mph8 km/h from W, gusts 6 mph9 km/h	79%	19%	1
Mon 10a	Mostly sunny	49°9° (likely 49°9° to 53°12°)	48°9°	0%	5 mph8 km/h from W, gusts 6 mph10 km/h	71%	34%	2
Mon 11a	Mostly sunny	55°13° (likely 54°12° to 59°15°)	55°13°	0%	5 mph8 km/h from W, gusts 12 mph20 km/h	61%	64%	3
Mon 12p	Mostly sunny	60°16° (likely 59°15° to 64°18°)	60°16°	0%	5 mph8 km/h from W, gusts 14 mph23 km/h	55%	17%	4
Mon 1p	Sunny	65°18° (likely 63°17° to 67°19°)	65°18°	0%	5 mph8 km/h from W, gusts 15 mph23 km/h	48%	7%	4
Mon 2p	Sunny	67°19° (likely 66°19° to 69°21°)	67°19°	0%	5 mph8 km/h from W, gusts 15 mph25 km/h	47%	12%	4
Mon 3p	Sunny	68°20° (likely 67°19° to 69°21°)	68°20°	0%	5 mph8 km/h from W, gusts 15 mph25 km/h	47%	20%	3
Mon 4p	Sunny	67°19° (likely 66°19° to 68°20°)	67°19°	0%	5 mph8 km/h from W, gusts 15 mph25 km/h	50%	16%	2
Mon 5p	Sunny	65°18° (likely 64°18° to 65°18°)	65°18°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	56%	24%	1
Mon 6p	Clear	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from NW, gusts 14 mph22 km/h	62%	25%	0
Mon 7p	Cloudy	58°14° (likely 56°13° to 59°15°)	58°14°	0%	5 mph8 km/h from NW, gusts 14 mph22 km/h	72%	55%	0
Mon 8p	Cloudy	54°12° (likely 54°12° to 57°14°)	54°12°	0%	5 mph8 km/h from NW, gusts 14 mph22 km/h	80%	60%	0
Mon 9p	Mostly clear	52°11° (likely 51°11° to 57°14°)	52°11°	0%	5 mph8 km/h from NW, gusts 11 mph17 km/h	83%	38%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Partly sunny. High 60°16°, low 31°−1°. Typical 59°15° / 40°4°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Clear, 40°4°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 32°0°
  Dry
Official NWS forecast
Tonight: Clear, with a low around 31. Northwest wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–61°16°
Low, likely
24°−4°–31°−1°
Typical high / low
59°15° / 40°4°
Wind
5 mph9 km/h, gusts 12 mph20 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 65°18°, low 36°2°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Day: Sunny, with a high near 65. West wind around 0 mph.
Night: Mostly clear, with a low around 36. Southwest wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–65°18°
Low, likely
28°−2°–36°2°
Typical high / low
58°14° / 39°4°
Wind
6 mph10 km/h, gusts 14 mph23 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 68°20°, low 37°3°. Typical 58°14° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Official NWS forecast
Day: Sunny, with a high near 68. West wind 0 to 5 mph.
Night: Mostly clear, with a low around 37. Northwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–70°21°
Low, likely
30°−1°–39°4°
Typical high / low
58°14° / 39°4°
Wind
10 mph16 km/h, gusts 25 mph40 km/h
UV peak
4
Tuesday, Oct 27. Sunny. High 54°12°, low 26°−3°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 51°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 38°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 28°−2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 54.
Night: Clear, with a low around 26.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
51°11°–54°12°
Low, likely
26°−3°–37°3°
Typical high / low
58°14° / 39°4°
Wind
10 mph16 km/h, gusts 25 mph40 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 55°13°, low 34°1°. Typical 57°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 28°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 55.
Night: Mostly clear, with a low around 34.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
51°11°–55°13°
Low, likely
21°−6°–34°1°
Typical high / low
57°14° / 38°3°
Wind
6 mph9 km/h, gusts 13 mph21 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 64°18°, low 45°7°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Mostly clear, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–68°20°
Low, likely
37°3°–45°7°
Typical high / low
57°14° / 38°3°
Wind
12 mph19 km/h, gusts 34 mph55 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 67°19°, low 41°5°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 67.
Night: Partly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–73°23°
Low, likely
41°5°–50°10°
Typical high / low
57°14° / 38°3°
Wind
9 mph15 km/h, gusts 25 mph41 km/h
UV peak
3
Saturday, Oct 31. Partly sunny. High 64°18°, low 43°6°. Typical 56°13° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 49°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 44°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 64.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–66°19°
Low, likely
40°4°–46°8°
Typical high / low
56°13° / 37°3°
Wind
6 mph10 km/h, gusts 17 mph27 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 64°18°, low 44°7°. Typical 56°13° / 37°3°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  20% chance
4. Overnight
  midnight–6 AM
  Drizzle, 58°14°
  30% chance · 0.03 in0.8 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–68°20°
Low, likely
40°4°–47°8°
Typical high / low
56°13° / 37°3°
Wind
10 mph16 km/h, gusts 29 mph47 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 66°19°, low 55°13°. Typical 55°13° / 37°3°. Rain 0.14 in3.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  30% chance · 0.05 in1.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 66°19°
  30% chance · 0.03 in0.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 60°16°
  30% chance · 0.02 in0.4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–71°22°
Low, likely
51°11°–63°17°
Typical high / low
55°13° / 37°3°
Wind
14 mph22 km/h, gusts 35 mph57 km/h

10 days15 days30 days

The outlook

Today
Dry, high 60°, low 31°.
Tomorrow
Dry, high 65°, low 36°, warming up.
Monday
Dry, high 68°, low 37°, warming up.
Rest of week
Mostly dry, highs 54–67°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (GYX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Souhegan River at Merrimack

7.3 mi

Below flood stage

Level: 2.7 ft
Flow: 91 cfs

Forecast peak 2.6 ft Sun 2 AM

Reading from Sat 9:30 PM · NWS gauge page

Merrimack River at Nashua

7.4 mi

Below flood stage

Level: 4.7 ft
Flow: 2,920 cfs

Forecast peak 4.6 ft Sun 2 AM

Reading from Sat 9:15 PM · NWS gauge page

Merrimack River at Goffs Falls

8.3 mi

Below flood stage

Level: 3.5 ft
Flow: 1,720 cfs

Forecast peak 3.5 ft Sun 2 AM

Reading from Sat 9:30 PM · NWS gauge page

Merrimack River at Lowell

15 mi

Below flood stage

Level: 42.3 ft
Flow: 2,490 cfs

Forecast peak 42.2 ft Sun 2 AM

Reading from Sat 9:30 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 71% less heating than a typical week.

This week 34Typical 118

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 16 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°F).

Open the windows?

Sun, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Manchester Airport · official normals 1991–2020 · records 1885–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 1° colder than normal (daily mean temperature).

−4°−2°MonOct 19
+1°±0°TueOct 20
−1°WedOct 21
+4°+2°ThuOct 22
−4°−2°FriOct 23
—SatOct 24
—SunOct 25

Londonderry weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 39 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 38 min less
Golden hour: 5:09–6:06 PM; Morning 6:51–7:49 AM
Blue hour: 6:06–6:17 PM; Morning 6:40–6:51 AM; first light 6:40 AM

Stars tonight? Fair

Clear 10:46 PM–6:41 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:18 AM · rises 4:46 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Londonderry. The highest point on the skyline is about 4,300 ft, 23 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Londonderry, NH weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Souhegan River at Merrimack

Merrimack River at Nashua

Merrimack River at Goffs Falls

Merrimack River at Lowell

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon