Monthly outlook for New Castle, NH: average high 57.9°, average low 42.3°. That is 1.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 2 November (69°), the coolest 18 October (31.8°).
57.9°/42.3°
Average high / low
+1.6°
Above normal
3 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
55.9°
56°
-0°
28 October – 6 November
61.4°
53.1°
+4.6°
7 November – 16 November
at normal
48.7°
—
October records over 66 years
82.2°3 October 2023All-time high
29.5°24 October 1969All-time low
Mon, 1957° / 38°0
57 °
New Castle, Monday, 19 October
Overcast. High 57°, low 38°.
Pressure30.45 inHg
Wind4.1 mph SE
Humidity52%
Visibility6.2 mi
Dew point39°
Tue, 2062° / 42°0
62 °
New Castle, Tuesday, 20 October
Partly cloudy. High 62°, low 42°.
Pressure30.27 inHg
Wind10.2 mph NE
Humidity47%
Visibility6.2 mi
Dew point40°
Wed, 2154° / 41°0
54 °
New Castle, Wednesday, 21 October
Clear. High 54°, low 41°.
Pressure30.33 inHg
Wind8.8 mph NE
Humidity55%
Visibility6.2 mi
Dew point37°
Thu, 2262° / 38°0
62 °
New Castle, Thursday, 22 October
Clear. High 62°, low 38°.
Pressure29.97 inHg
Wind12.6 mph NW
Humidity53%
Visibility—
Dew point36°
Fri, 2351° / 42°0
51 °
New Castle, Friday, 23 October
Mostly clear. High 51°, low 42°.
Pressure30.12 inHg
Wind14.6 mph NW
Humidity53%
Visibility—
Dew point31°
Sat, 2450° / 35°0
50 °
New Castle, Saturday, 24 October
Clear. High 50°, low 35°.
Pressure30.68 inHg
Wind11 mph SW
Humidity45%
Visibility—
Dew point24°
Sun, 2560° / 40°0
60 °
New Castle, Sunday, 25 October
Clear. High 60°, low 40°.
Pressure30.42 inHg
Wind16.4 mph SW
Humidity56%
Visibility—
Dew point36°
Mon, 2653° / 39°0.15
53 °
New Castle, Monday, 26 October
Light rain. High 53°, low 39°.
Pressure30.15 inHg
Wind16.1 mph NW
Humidity49%
Visibility—
Dew point32°
Tue, 2756° / 38°0
56 °
New Castle, Tuesday, 27 October
Overcast. High 56°, low 38°.
Pressure30.09 inHg
Wind15.4 mph W
Humidity53%
Visibility—
Dew point33°
Wed, 2847° / 38°0
47 °
New Castle, Wednesday, 28 October
Clear. High 47°, low 38°.
Pressure30.30 inHg
Wind10.4 mph SE
Humidity55%
Visibility—
Dew point29°
Thu, 2955° / 43°0.14
55 °
New Castle, Thursday, 29 October
Light rain. High 55°, low 43°.
Pressure30.12 inHg
Wind11.7 mph SW
Humidity81%
Visibility—
Dew point44°
Fri, 3065° / 54°1.48
65 °
New Castle, Friday, 30 October
Heavy rain. High 65°, low 54°.
Pressure29.65 inHg
Wind13.9 mph S
Humidity99%
Visibility—
Dew point58°
Sat, 3164° / 50°0
64 °
New Castle, Saturday, 31 October
Clear. High 64°, low 50°.
Pressure29.97 inHg
Wind10.6 mph SW
Humidity62%
Visibility—
Dew point45°
Sun, 0168° / 54°0
68 °
New Castle, Sunday, 1 November
Overcast. High 68°, low 54°.
Pressure29.88 inHg
Wind12 mph SW
Humidity82%
Visibility—
Dew point56°
Mon, 0269° / 54°0
69 °
New Castle, Monday, 2 November
Clear. High 69°, low 54°.
Pressure29.77 inHg
Wind22 mph NW
Humidity64%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0353° / 42°0.22
53 °
New Castle, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.22 in
Chance of precipitation37%
Record high70° (2017)
Record low28° (2002)
Wed, 0452° / 42°0.08
52 °
New Castle, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.08 in
Chance of precipitation20%
Record high68° (1987)
Record low31° (2002)
Thu, 0553° / 42°0.19
53 °
New Castle, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.19 in
Chance of precipitation38%
Record high73° (2022)
Record low29° (1965)
Fri, 0652° / 43°0.13
52 °
New Castle, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.13 in
Chance of precipitation37%
Record high77° (2024)
Record low31° (1987)
Sat, 0751° / 41°0.05
51 °
New Castle, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.05 in
Chance of precipitation22%
Record high71° (2022)
Record low27° (2002)
Sun, 0850° / 40°0.1
50 °
New Castle, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.1 in
Chance of precipitation30%
Record high62° (1996)
Record low27° (2002)
Mon, 0950° / 40°0.13
50 °
New Castle, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.13 in
Chance of precipitation32%
Record high64° (1975)
Record low25° (1971)
Tue, 1050° / 40°0.16
50 °
New Castle, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.16 in
Chance of precipitation35%
Record high68° (2020)
Record low24° (2017)
Wed, 1149° / 40°0.13
49 °
New Castle, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.13 in
Chance of precipitation47%
Record high71° (2020)
Record low24° (2017)
Thu, 1248° / 38°0.13
48 °
New Castle, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.13 in
Chance of precipitation38%
Record high71° (2022)
Record low25° (2019)
Fri, 1347° / 37°0.17
47 °
New Castle, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.17 in
Chance of precipitation42%
Record high65° (1964)
Record low17° (2019)
Sat, 1447° / 37°0.12
47 °
New Castle, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.12 in
Chance of precipitation30%
Record high63° (1973)
Record low19° (1986)
Sun, 1548° / 37°0.13
48 °
New Castle, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.13 in
Chance of precipitation37%
Record high65° (1993)
Record low21° (2018)
Mon, 1647° / 37°0.16
47 °
New Castle, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.16 in
Chance of precipitation37%
Record high62° (2001)
Record low22° (1967)
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 New Castle, 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 New Castle, 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.