Monthly outlook for Northumberland, NH: average high 48.6°, average low 31.7°. That is 1° above the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 25 October (62.6°), the coolest 24 October (20.4°).
48.6°/31.7°
Average high / low
+1°
Above normal
5 / 6
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
52.3°
48°
+2.4°
3 November – 12 November
42.4°
43.9°
-0.8°
13 November – 22 November
at normal
38.1°
—
October records over 66 years
79.7°4 October 2023All-time high
10.6°30 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Lunenburg (12 mi).
Sun, 2563° / 36°0
63 °
Northumberland, Sunday, 25 October
Clear. High 63°, low 36°.
Pressure30.50 inHg
Wind2.8 mph SW
Humidity43%
Visibility6.2 mi
Dew point31°
Mon, 2652° / 33°0
52 °
Northumberland, Monday, 26 October
Overcast. High 52°, low 33°.
Pressure30.18 inHg
Wind4.4 mph W
Humidity57%
Visibility6.2 mi
Dew point37°
Tue, 2739° / 27°0
39 °
Northumberland, Tuesday, 27 October
Clear. High 39°, low 27°.
Pressure30.39 inHg
Wind8.5 mph N
Humidity70%
Visibility6.2 mi
Dew point18°
Wed, 2844° / 25°0
44 °
Northumberland, Wednesday, 28 October
Clear. High 44°, low 25°.
Pressure30.53 inHg
Wind3.8 mph S
Humidity67%
Visibility—
Dew point27°
Thu, 2956° / 31°0
56 °
Northumberland, Thursday, 29 October
Partly cloudy. High 56°, low 31°.
Pressure30.24 inHg
Wind6.8 mph SW
Humidity68%
Visibility—
Dew point34°
Fri, 3055° / 40°0
55 °
Northumberland, Friday, 30 October
Overcast. High 55°, low 40°.
Pressure30.15 inHg
Wind3.5 mph W
Humidity75%
Visibility—
Dew point44°
Sat, 3155° / 38°0
55 °
Northumberland, Saturday, 31 October
Overcast. High 55°, low 38°.
Pressure30.36 inHg
Wind4 mph N
Humidity68%
Visibility—
Dew point37°
Sun, 0155° / 34°0
55 °
Northumberland, Sunday, 1 November
Clear. High 55°, low 34°.
Pressure30.42 inHg
Wind4.5 mph E
Humidity40%
Visibility—
Dew point24°
Mon, 0247° / 32°0.04
47 °
Northumberland, Monday, 2 November
Light rain. High 47°, low 32°.
Pressure30.03 inHg
Wind4 mph E
Humidity40%
Visibility—
Dew point22°
Tue, 0352° / 39°0.06
52 °
Northumberland, Tuesday, 3 November
Light rain. High 52°, low 39°.
Pressure29.80 inHg
Wind12.6 mph SW
Humidity74%
Visibility—
Dew point38°
Wed, 0439° / 28°0.21
39 °
Northumberland, Wednesday, 4 November
Snow. High 39°, low 28°.
Pressure29.80 inHg
Wind13 mph W
Humidity81%
Visibility—
Dew point31°
Thu, 0539° / 26°0.3
39 °
Northumberland, Thursday, 5 November
Snow. High 39°, low 26°.
Pressure29.94 inHg
Wind7.6 mph SW
Humidity63%
Visibility—
Dew point25°
Fri, 0637° / 27°0.03
37 °
Northumberland, Friday, 6 November
Light snow. High 37°, low 27°.
Pressure30.33 inHg
Wind9 mph NW
Humidity69%
Visibility—
Dew point24°
Sat, 0744° / 28°0.32
44 °
Northumberland, Saturday, 7 November
Rain. High 44°, low 28°.
Pressure30.12 inHg
Wind6.6 mph S
Humidity68%
Visibility—
Dew point32°
Sun, 0845° / 43°0.02
45 °
Northumberland, Sunday, 8 November
Light rain. High 45°, low 43°.
Pressure29.80 inHg
Wind3.7 mph NW
Humidity99%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0943° / 30°0.1
43 °
Northumberland, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.1 in
Chance of precipitation32%
Record high63° (2011)
Record low13° (1971)
Tue, 1044° / 30°0.12
44 °
Northumberland, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.12 in
Chance of precipitation43%
Record high65° (2020)
Record low12° (1992)
Wed, 1142° / 30°0.15
42 °
Northumberland, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.15 in
Chance of precipitation52%
Record high65° (2022)
Record low12° (2017)
Thu, 1241° / 28°0.14
41 °
Northumberland, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.14 in
Chance of precipitation40%
Record high62° (2022)
Record low10° (1971)
Fri, 1340° / 26°0.15
40 °
Northumberland, Friday, 13 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.15 in
Chance of precipitation47%
Record high55° (1982)
Record low0° (2019)
Sat, 1439° / 26°0.1
39 °
Northumberland, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.1 in
Chance of precipitation45%
Record high59° (2011)
Record low-5° (1971)
Sun, 1540° / 26°0.14
40 °
Northumberland, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.14 in
Chance of precipitation48%
Record high58° (2008)
Record low-6° (2018)
Mon, 1639° / 26°0.13
39 °
Northumberland, Monday, 16 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.13 in
Chance of precipitation40%
Record high60° (2008)
Record low-3° (2019)
Tue, 1738° / 25°0.11
38 °
Northumberland, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.11 in
Chance of precipitation42%
Record high60° (2006)
Record low-2° (1972)
Wed, 1839° / 25°0.09
39 °
Northumberland, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.09 in
Chance of precipitation30%
Record high58° (2021)
Record low2° (1997)
Thu, 1938° / 24°0.06
38 °
Northumberland, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.06 in
Chance of precipitation33%
Record high59° (2016)
Record low1° (1972)
Fri, 2038° / 24°0.14
38 °
Northumberland, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.14 in
Chance of precipitation43%
Record high64° (1991)
Record low1° (1965)
Sat, 2136° / 23°0.14
36 °
Northumberland, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high36°
Average low23°
Average precipitation0.14 in
Chance of precipitation40%
Record high57° (1991)
Record low6° (1967)
Sun, 2235° / 23°0.09
35 °
Northumberland, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.09 in
Chance of precipitation43%
Record high57° (1999)
Record low-2° (2018)
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 Northumberland, 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 Northumberland, 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.