Monthly outlook for New Castle, NH: average high 54.4°, average low 39.6°. That is 0.2° above the climate normal for October. Precipitation is expected on 4 days (about 2.4 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 26 October (67.7°), the coolest 24 October (30.1°).
54.4°/39.6°
Average high / low
+0.2°
Above normal
4 / 5
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
56.5°
54.6°
+1.1°
1 November – 10 November
50.9°
51.9°
-0.5°
11 November – 20 November
at normal
47°
—
October records over 66 years
82.2°3 October 2023All-time high
29.5°24 October 1969All-time low
Fri, 2355° / 33°0
55 °
New Castle, Friday, 23 October
Clear. High 55°, low 33°.
Pressure30.33 inHg
Wind8.9 mph N
Humidity48%
Visibility6.2 mi
Dew point28°
Sat, 2456° / 30°0
56 °
New Castle, Saturday, 24 October
Clear. High 56°, low 30°.
Pressure30.50 inHg
Wind0.9 mph W
Humidity50%
Visibility6.2 mi
Dew point33°
Sun, 2560° / 35°0
60 °
New Castle, Sunday, 25 October
Clear. High 60°, low 35°.
Pressure30.53 inHg
Wind0.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point37°
Mon, 2668° / 39°0
68 °
New Castle, Monday, 26 October
Clear. High 68°, low 39°.
Pressure30.21 inHg
Wind5 mph W
Humidity41%
Visibility6.2 mi
Dew point38°
Tue, 2751° / 39°0
51 °
New Castle, Tuesday, 27 October
Clear. High 51°, low 39°.
Pressure30.39 inHg
Wind7.8 mph N
Humidity52%
Visibility—
Dew point31°
Wed, 2848° / 36°0
48 °
New Castle, Wednesday, 28 October
Overcast. High 48°, low 36°.
Pressure30.47 inHg
Wind9.9 mph SW
Humidity53%
Visibility—
Dew point28°
Thu, 2957° / 47°0
57 °
New Castle, Thursday, 29 October
Overcast. High 57°, low 47°.
Pressure30.24 inHg
Wind17.3 mph S
Humidity65%
Visibility—
Dew point41°
Fri, 3055° / 41°0.05
55 °
New Castle, Friday, 30 October
Light rain. High 55°, low 41°.
Pressure30.06 inHg
Wind14.7 mph NW
Humidity48%
Visibility—
Dew point32°
Sat, 3151° / 38°0
51 °
New Castle, Saturday, 31 October
Clear. High 51°, low 38°.
Pressure30.45 inHg
Wind11.4 mph W
Humidity47%
Visibility—
Dew point28°
Sun, 0155° / 45°0
55 °
New Castle, Sunday, 1 November
Overcast. High 55°, low 45°.
Pressure30.47 inHg
Wind12.3 mph S
Humidity65%
Visibility—
Dew point40°
Mon, 0262° / 53°0.27
62 °
New Castle, Monday, 2 November
Rain. High 62°, low 53°.
Pressure29.94 inHg
Wind11.3 mph S
Humidity92%
Visibility—
Dew point57°
Tue, 0354° / 46°0
54 °
New Castle, Tuesday, 3 November
Clear. High 54°, low 46°.
Pressure30.03 inHg
Wind11.3 mph N
Humidity51%
Visibility—
Dew point34°
Wed, 0451° / 44°0.37
51 °
New Castle, Wednesday, 4 November
Rain. High 51°, low 44°.
Pressure29.62 inHg
Wind17.4 mph S
Humidity88%
Visibility—
Dew point47°
Thu, 0539° / 37°1.68
39 °
New Castle, Thursday, 5 November
Snow. High 39°, low 37°.
Pressure29.53 inHg
Wind30.3 mph N
Humidity98%
Visibility—
Dew point37°
Fri, 0645° / 31°0
45 °
New Castle, Friday, 6 November
Partly cloudy. High 45°, low 31°.
Pressure30.06 inHg
Wind9.1 mph NW
Humidity71%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1746° / 36°0.15
46 °
New Castle, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.15 in
Chance of precipitation30%
Record high62° (2023)
Record low22° (1967)
Wed, 1846° / 36°0.08
46 °
New Castle, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.08 in
Chance of precipitation25%
Record high64° (1987)
Record low26° (2020)
Thu, 1946° / 35°0.07
46 °
New Castle, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.07 in
Chance of precipitation23%
Record high61° (1991)
Record low22° (1986)
Fri, 2046° / 35°0.14
46 °
New Castle, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation35%
Record high66° (1985)
Record low20° (1986)
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.