Monthly outlook for Northumberland, NH: average high 51.4°, average low 36.6°. That is 3.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 29 October (64.7°), the coolest 1 November (27.1°).
51.4°/36.6°
Average high / low
+3.8°
Above normal
3 / 6
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
56.2°
46.1°
+5.6°
8 November – 17 November
43.5°
40.8°
+1.5°
18 November – 27 November
at normal
36.5°
—
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).
Fri, 3056° / 43°0.07
56 °
Northumberland, Friday, 30 October
Light rain. High 56°, low 43°.
Pressure29.97 inHg
Wind8.9 mph NW
Humidity85%
Visibility6.2 mi
Dew point43°
Sat, 3144° / 28°0
44 °
Northumberland, Saturday, 31 October
Light rain. High 44°, low 28°.
Pressure30.39 inHg
Wind9.7 mph NW
Humidity67%
Visibility6.2 mi
Dew point19°
Sun, 0150° / 27°0
50 °
Northumberland, Sunday, 1 November
Clear. High 50°, low 27°.
Pressure30.42 inHg
Wind6.7 mph W
Humidity57%
Visibility6.2 mi
Dew point31°
Mon, 0258° / 32°0
58 °
Northumberland, Monday, 2 November
Mostly clear. High 58°, low 32°.
Pressure30.27 inHg
Wind3.6 mph SW
Humidity59%
Visibility6.2 mi
Dew point38°
Tue, 0361° / 45°0
61 °
Northumberland, Tuesday, 3 November
Overcast. High 61°, low 45°.
Pressure30.30 inHg
Wind5.3 mph E
Humidity72%
Visibility—
Dew point45°
Wed, 0457° / 44°0
57 °
Northumberland, Wednesday, 4 November
Overcast. High 57°, low 44°.
Pressure30.33 inHg
Wind5.3 mph E
Humidity92%
Visibility—
Dew point46°
Thu, 0558° / 43°0
58 °
Northumberland, Thursday, 5 November
Overcast. High 58°, low 43°.
Pressure30.03 inHg
Wind8.1 mph S
Humidity81%
Visibility—
Dew point48°
Fri, 0657° / 53°0.75
57 °
Northumberland, Friday, 6 November
Rain. High 57°, low 53°.
Pressure29.65 inHg
Wind4.3 mph E
Humidity98%
Visibility—
Dew point55°
Sat, 0757° / 36°0.53
57 °
Northumberland, Saturday, 7 November
Rain. High 57°, low 36°.
Pressure29.56 inHg
Wind10 mph NW
Humidity94%
Visibility—
Dew point47°
Sun, 0839° / 30°0
39 °
Northumberland, Sunday, 8 November
Overcast. High 39°, low 30°.
Pressure29.97 inHg
Wind11.6 mph NW
Humidity62%
Visibility—
Dew point23°
Mon, 0939° / 28°0
39 °
Northumberland, Monday, 9 November
Overcast. High 39°, low 28°.
Pressure30.18 inHg
Wind4.5 mph NW
Humidity51%
Visibility—
Dew point18°
Tue, 1044° / 30°0
44 °
Northumberland, Tuesday, 10 November
Overcast. High 44°, low 30°.
Pressure30.03 inHg
Wind4.2 mph E
Humidity45%
Visibility—
Dew point18°
Wed, 1145° / 39°0
45 °
Northumberland, Wednesday, 11 November
Overcast. High 45°, low 39°.
Pressure30.15 inHg
Wind4.7 mph E
Humidity77%
Visibility—
Dew point38°
Thu, 1251° / 36°0
51 °
Northumberland, Thursday, 12 November
Partly cloudy. High 51°, low 36°.
Pressure30.18 inHg
Wind4.1 mph E
Humidity65%
Visibility—
Dew point35°
Fri, 1343° / 37°0
43 °
Northumberland, Friday, 13 November
Overcast. High 43°, low 37°.
Pressure30.12 inHg
Wind3.8 mph E
Humidity77%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 2536° / 21°0.15
36 °
Northumberland, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high36°
Average low21°
Average precipitation0.15 in
Chance of precipitation43%
Record high56° (2004)
Record low-8° (2000)
Thu, 2636° / 24°0.18
36 °
Northumberland, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.18 in
Chance of precipitation55%
Record high55° (1979)
Record low-2° (1962)
Fri, 2736° / 22°0.16
36 °
Northumberland, Friday, 27 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.16 in
Chance of precipitation57%
Record high55° (1979)
Record low-6° (1978)
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.