Monthly outlook for New Castle, NH: average high 55.8°, average low 41.3°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 1.7 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 26 October (67°), the coolest 24 October (28.5°).
55.8°/41.3°
Average high / low
+1.2°
Above normal
6 / 5
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
58°
54.3°
+2.1°
2 November – 11 November
52°
51.4°
+0.3°
12 November – 21 November
at normal
46.5°
—
October records over 66 years
82.2°3 October 2023All-time high
29.5°24 October 1969All-time low
Sat, 2459° / 29°0
59 °
New Castle, Saturday, 24 October
Clear. High 59°, low 29°.
Pressure30.47 inHg
Wind0.2 mph S
Humidity47%
Visibility6.2 mi
Dew point32°
Sun, 2561° / 35°0
61 °
New Castle, Sunday, 25 October
Clear. High 61°, low 35°.
Pressure30.50 inHg
Wind2.2 mph S
Humidity44%
Visibility6.2 mi
Dew point36°
Mon, 2667° / 39°0
67 °
New Castle, Monday, 26 October
Partly cloudy. High 67°, low 39°.
Pressure30.15 inHg
Wind6.6 mph W
Humidity43%
Visibility6.2 mi
Dew point39°
Tue, 2751° / 37°0
51 °
New Castle, Tuesday, 27 October
Clear. High 51°, low 37°.
Pressure30.36 inHg
Wind8.3 mph NW
Humidity52%
Visibility—
Dew point30°
Wed, 2849° / 33°0
49 °
New Castle, Wednesday, 28 October
Clear. High 49°, low 33°.
Pressure30.50 inHg
Wind8.5 mph S
Humidity54%
Visibility—
Dew point29°
Thu, 2959° / 42°0
59 °
New Castle, Thursday, 29 October
Clear. High 59°, low 42°.
Pressure30.42 inHg
Wind13.8 mph SW
Humidity65%
Visibility—
Dew point40°
Fri, 3065° / 51°0
65 °
New Castle, Friday, 30 October
Light rain. High 65°, low 51°.
Pressure30.12 inHg
Wind14 mph SW
Humidity69%
Visibility—
Dew point48°
Sat, 3156° / 47°0.02
56 °
New Castle, Saturday, 31 October
Light rain. High 56°, low 47°.
Pressure30.33 inHg
Wind12.9 mph NE
Humidity75%
Visibility—
Dew point45°
Sun, 0158° / 50°0.1
58 °
New Castle, Sunday, 1 November
Light rain. High 58°, low 50°.
Pressure30.36 inHg
Wind15.1 mph S
Humidity85%
Visibility—
Dew point46°
Mon, 0260° / 57°0.2
60 °
New Castle, Monday, 2 November
Light rain. High 60°, low 57°.
Pressure30.06 inHg
Wind9.6 mph SW
Humidity94%
Visibility—
Dew point58°
Tue, 0357° / 51°0.35
57 °
New Castle, Tuesday, 3 November
Rain. High 57°, low 51°.
Pressure30.12 inHg
Wind12.3 mph NE
Humidity95%
Visibility—
Dew point51°
Wed, 0451° / 46°0.12
51 °
New Castle, Wednesday, 4 November
Light rain. High 51°, low 46°.
Pressure30.24 inHg
Wind13.6 mph SE
Humidity70%
Visibility—
Dew point39°
Thu, 0550° / 41°0.82
50 °
New Castle, Thursday, 5 November
Rain. High 50°, low 41°.
Pressure29.50 inHg
Wind19.3 mph NW
Humidity97%
Visibility—
Dew point41°
Fri, 0650° / 39°0.01
50 °
New Castle, Friday, 6 November
Light rain. High 50°, low 39°.
Pressure29.62 inHg
Wind20.9 mph SW
Humidity58%
Visibility—
Dew point33°
Sat, 0743° / 29°0.05
43 °
New Castle, Saturday, 7 November
Light snow. High 43°, low 29°.
Pressure29.83 inHg
Wind21.2 mph NW
Humidity43%
Visibility—
Dew point16°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 2145° / 34°0.13
45 °
New Castle, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.13 in
Chance of precipitation33%
Record high60° (1991)
Record low19° (1987)
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.