Monthly outlook for Northumberland, NY: average high 48.5°, average low 35.9°. That is 2.5° above the climate normal for November. Precipitation is expected on 3 days (about 2.0 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 23 November (65°), the coolest 18 November (29.6°).
48.5°/35.9°
Average high / low
+2.5°
Above normal
3 / 6
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 November – 19 November
46.6°
45.4°
+0.7°
20 November – 29 November
51.7°
41.9°
+5.5°
30 November – 9 December
at normal
37.4°
—
November records over 66 years
72.1°1 November 1974All-time high
-5.3°22 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Moreau (6 mi).
Wed, 1154° / 43°0.02
54 °
Northumberland, Wednesday, 11 November
Light rain. High 54°, low 43°.
Pressure29.91 inHg
Wind6.4 mph NW
Humidity44%
Visibility6.2 mi
Dew point28°
Thu, 1245° / 37°0.92
45 °
Northumberland, Thursday, 12 November
Rain. High 45°, low 37°.
Pressure29.65 inHg
Wind4.8 mph N
Humidity97%
Visibility1.0 mi
Dew point41°
Fri, 1342° / 37°0.22
42 °
Northumberland, Friday, 13 November
Light rain. High 42°, low 37°.
Pressure29.62 inHg
Wind8.1 mph N
Humidity79%
Visibility6.2 mi
Dew point35°
Sat, 1442° / 36°0
42 °
Northumberland, Saturday, 14 November
Overcast. High 42°, low 36°.
Pressure29.80 inHg
Wind10.2 mph NW
Humidity66%
Visibility6.2 mi
Dew point26°
Sun, 1544° / 37°0
44 °
Northumberland, Sunday, 15 November
Overcast. High 44°, low 37°.
Pressure30.15 inHg
Wind9.6 mph NW
Humidity67%
Visibility—
Dew point31°
Mon, 1648° / 34°0
48 °
Northumberland, Monday, 16 November
Partly cloudy. High 48°, low 34°.
Pressure30.39 inHg
Wind5.9 mph N
Humidity65%
Visibility—
Dew point34°
Tue, 1744° / 30°0
44 °
Northumberland, Tuesday, 17 November
Mostly clear. High 44°, low 30°.
Pressure30.45 inHg
Wind4.8 mph N
Humidity73%
Visibility—
Dew point29°
Wed, 1844° / 30°0
44 °
Northumberland, Wednesday, 18 November
Clear. High 44°, low 30°.
Pressure30.33 inHg
Wind7 mph N
Humidity66%
Visibility—
Dew point28°
Thu, 1948° / 30°0
48 °
Northumberland, Thursday, 19 November
Clear. High 48°, low 30°.
Pressure30.36 inHg
Wind5 mph N
Humidity63%
Visibility—
Dew point28°
Fri, 2049° / 32°0
49 °
Northumberland, Friday, 20 November
Partly cloudy. High 49°, low 32°.
Pressure30.39 inHg
Wind5.2 mph SW
Humidity65%
Visibility—
Dew point31°
Sat, 2152° / 35°0
52 °
Northumberland, Saturday, 21 November
Overcast. High 52°, low 35°.
Pressure30.30 inHg
Wind4.8 mph S
Humidity60%
Visibility—
Dew point31°
Sun, 2258° / 38°0.02
58 °
Northumberland, Sunday, 22 November
Light rain. High 58°, low 38°.
Pressure30.12 inHg
Wind14.3 mph S
Humidity79%
Visibility—
Dew point42°
Mon, 2365° / 49°0.82
65 °
Northumberland, Monday, 23 November
Rain. High 65°, low 49°.
Pressure29.68 inHg
Wind22.1 mph S
Humidity84%
Visibility—
Dew point58°
Tue, 2445° / 32°0
45 °
Northumberland, Tuesday, 24 November
Mostly clear. High 45°, low 32°.
Pressure29.94 inHg
Wind15.7 mph SW
Humidity51%
Visibility—
Dew point18°
Wed, 2541° / 31°0
41 °
Northumberland, Wednesday, 25 November
Clear. High 41°, low 31°.
Pressure30.27 inHg
Wind8.3 mph W
Humidity59%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2642° / 30°0.22
42 °
Northumberland, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.22 in
Chance of precipitation43%
Record high63° (1979)
Record low13° (1978)
Fri, 2742° / 29°0.13
42 °
Northumberland, Friday, 27 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.13 in
Chance of precipitation35%
Record high58° (1999)
Record low13° (1978)
Sat, 2843° / 30°0.21
43 °
Northumberland, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.21 in
Chance of precipitation48%
Record high63° (1990)
Record low10° (2002)
Sun, 2941° / 29°0.1
41 °
Northumberland, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.1 in
Chance of precipitation35%
Record high60° (2011)
Record low10° (2014)
Mon, 3040° / 28°0.13
40 °
Northumberland, Monday, 30 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.13 in
Chance of precipitation38%
Record high60° (2006)
Record low13° (2013)
Tue, 0140° / 27°0.2
40 °
Northumberland, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.2 in
Chance of precipitation37%
Record high59° (2006)
Record low3° (1976)
Wed, 0239° / 26°0.11
39 °
Northumberland, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.11 in
Chance of precipitation37%
Record high57° (1998)
Record low5° (1971)
Thu, 0338° / 26°0.17
38 °
Northumberland, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.17 in
Chance of precipitation40%
Record high57° (2009)
Record low-1° (1976)
Fri, 0437° / 24°0.11
37 °
Northumberland, Friday, 4 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.11 in
Chance of precipitation35%
Record high60° (1998)
Record low3° (1989)
Sat, 0536° / 24°0.11
36 °
Northumberland, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.11 in
Chance of precipitation28%
Record high61° (2001)
Record low-2° (2025)
Sun, 0638° / 26°0.16
38 °
Northumberland, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.16 in
Chance of precipitation45%
Record high61° (2001)
Record low8° (1969)
Mon, 0737° / 24°0.11
37 °
Northumberland, Monday, 7 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.11 in
Chance of precipitation35%
Record high60° (1998)
Record low2° (1964)
Tue, 0834° / 22°0.09
34 °
Northumberland, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high34°
Average low22°
Average precipitation0.09 in
Chance of precipitation28%
Record high51° (1966)
Record low2° (1989)
Wed, 0935° / 22°0.14
35 °
Northumberland, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.14 in
Chance of precipitation45%
Record high57° (1966)
Record low-4° (2025)
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, NY 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, NY 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.