Monthly outlook for Northumberland, NH: average high 47.9°, average low 35.3°. That is 1.1° above the climate normal for October. Precipitation is expected on 6 days (about 2.1 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 29 October (59.1°), the coolest 28 October (20.9°).
47.9°/35.3°
Average high / low
+1.1°
Above normal
6 / 6
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
51.2°
47.3°
+2.2°
5 November – 14 November
42.5°
42.5°
-0°
15 November – 24 November
at normal
37.3°
—
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).
Tue, 2748° / 23°0
48 °
Northumberland, Tuesday, 27 October
Clear. High 48°, low 23°.
Pressure30.42 inHg
Wind5.7 mph NW
Humidity69%
Visibility6.2 mi
Dew point21°
Wed, 2847° / 21°0
47 °
Northumberland, Wednesday, 28 October
Mostly clear. High 47°, low 21°.
Pressure30.45 inHg
Wind3.4 mph SW
Humidity58%
Visibility6.2 mi
Dew point23°
Thu, 2959° / 35°0
59 °
Northumberland, Thursday, 29 October
Mostly clear. High 59°, low 35°.
Pressure30.12 inHg
Wind6.1 mph S
Humidity63%
Visibility6.2 mi
Dew point43°
Fri, 3058° / 43°0.03
58 °
Northumberland, Friday, 30 October
Light rain. High 58°, low 43°.
Pressure29.97 inHg
Wind8.9 mph W
Humidity78%
Visibility6.2 mi
Dew point48°
Sat, 3146° / 32°0
46 °
Northumberland, Saturday, 31 October
Overcast. High 46°, low 32°.
Pressure30.33 inHg
Wind11.1 mph NW
Humidity64%
Visibility—
Dew point31°
Sun, 0155° / 32°0
55 °
Northumberland, Sunday, 1 November
Overcast. High 55°, low 32°.
Pressure30.39 inHg
Wind4 mph SW
Humidity54%
Visibility—
Dew point29°
Mon, 0249° / 44°0.29
49 °
Northumberland, Monday, 2 November
Rain. High 49°, low 44°.
Pressure30.21 inHg
Wind3.8 mph SW
Humidity93%
Visibility—
Dew point46°
Tue, 0350° / 46°0.03
50 °
Northumberland, Tuesday, 3 November
Light rain. High 50°, low 46°.
Pressure30.33 inHg
Wind4 mph E
Humidity95%
Visibility—
Dew point48°
Wed, 0446° / 43°0.15
46 °
Northumberland, Wednesday, 4 November
Rain. High 46°, low 43°.
Pressure30.24 inHg
Wind7 mph E
Humidity93%
Visibility—
Dew point43°
Thu, 0544° / 42°0.5
44 °
Northumberland, Thursday, 5 November
Light rain. High 44°, low 42°.
Pressure29.85 inHg
Wind5.9 mph E
Humidity96%
Visibility—
Dew point42°
Fri, 0652° / 43°0
52 °
Northumberland, Friday, 6 November
Overcast. High 52°, low 43°.
Pressure29.74 inHg
Wind4.1 mph W
Humidity81%
Visibility—
Dew point43°
Sat, 0746° / 42°0.09
46 °
Northumberland, Saturday, 7 November
Light rain. High 46°, low 42°.
Pressure29.65 inHg
Wind5.4 mph NE
Humidity95%
Visibility—
Dew point44°
Sun, 0841° / 34°0.68
41 °
Northumberland, Sunday, 8 November
Snow. High 41°, low 34°.
Pressure29.74 inHg
Wind6.6 mph NE
Humidity99%
Visibility—
Dew point37°
Mon, 0936° / 30°0.35
36 °
Northumberland, Monday, 9 November
Snow. High 36°, low 30°.
Pressure29.80 inHg
Wind6.7 mph N
Humidity95%
Visibility—
Dew point34°
Tue, 1037° / 22°0
37 °
Northumberland, Tuesday, 10 November
Overcast. High 37°, low 22°.
Pressure30.03 inHg
Wind6.7 mph N
Humidity89%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 2335° / 22°0.11
35 °
Northumberland, Monday, 23 November
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.11 in
Chance of precipitation32%
Record high59° (1979)
Record low-8° (1964)
Tue, 2436° / 22°0.08
36 °
Northumberland, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.08 in
Chance of precipitation45%
Record high57° (1999)
Record low-17° (1989)
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.