Monthly outlook for Cornish, NH: average high 56°, average low 37.6°. That is 0.3° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 11 October (71.5°), the coolest 21 October (26.5°).
56°/37.6°
Average high / low
+0.3°
Above normal
4 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
58.7°
56.6°
+1.1°
17 October – 26 October
51.5°
52.6°
-0.6°
27 October – 5 November
at normal
48.9°
—
October records over 66 years
81.5°4 October 2023All-time high
16.7°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Plainfield (6 mi).
Thu, 0866° / 46°0.07
66 °
Cornish, Thursday, 8 October
Light rain. High 66°, low 46°.
Pressure29.74 inHg
Wind12 mph W
Humidity53%
Visibility6.2 mi
Dew point45°
Fri, 0958° / 43°0
58 °
Cornish, Friday, 9 October
Clear. High 58°, low 43°.
Pressure30.03 inHg
Wind11.8 mph W
Humidity47%
Visibility6.2 mi
Dew point38°
Sat, 1061° / 38°0
61 °
Cornish, Saturday, 10 October
Clear. High 61°, low 38°.
Pressure30.45 inHg
Wind2.9 mph NW
Humidity39%
Visibility6.2 mi
Dew point33°
Sun, 1171° / 45°0.03
71 °
Cornish, Sunday, 11 October
Light rain. High 71°, low 45°.
Pressure30.30 inHg
Wind8.3 mph SW
Humidity59%
Visibility—
Dew point44°
Mon, 1262° / 47°0.17
62 °
Cornish, Monday, 12 October
Light rain. High 62°, low 47°.
Pressure29.74 inHg
Wind7.7 mph NE
Humidity97%
Visibility—
Dew point57°
Tue, 1343° / 35°0
43 °
Cornish, Tuesday, 13 October
Overcast. High 43°, low 35°.
Pressure30.06 inHg
Wind8.3 mph N
Humidity64%
Visibility—
Dew point26°
Wed, 1452° / 34°0
52 °
Cornish, Wednesday, 14 October
Clear. High 52°, low 34°.
Pressure30.24 inHg
Wind8 mph N
Humidity47%
Visibility—
Dew point25°
Thu, 1555° / 30°0
55 °
Cornish, Thursday, 15 October
Clear. High 55°, low 30°.
Pressure30.39 inHg
Wind6.8 mph E
Humidity43%
Visibility—
Dew point26°
Fri, 1655° / 45°0
55 °
Cornish, Friday, 16 October
Overcast. High 55°, low 45°.
Pressure30.21 inHg
Wind4.6 mph SE
Humidity80%
Visibility—
Dew point43°
Sat, 1757° / 51°0.04
57 °
Cornish, Saturday, 17 October
Light rain. High 57°, low 51°.
Pressure29.85 inHg
Wind3.5 mph SE
Humidity91%
Visibility—
Dew point53°
Sun, 1858° / 37°0.42
58 °
Cornish, Sunday, 18 October
Snow. High 58°, low 37°.
Pressure29.44 inHg
Wind19.6 mph W
Humidity87%
Visibility—
Dew point38°
Mon, 1948° / 34°0
48 °
Cornish, Monday, 19 October
Mostly clear. High 48°, low 34°.
Pressure30.00 inHg
Wind16.7 mph W
Humidity58%
Visibility—
Dew point28°
Tue, 2043° / 29°0
43 °
Cornish, Tuesday, 20 October
Overcast. High 43°, low 29°.
Pressure30.15 inHg
Wind15.5 mph NW
Humidity58%
Visibility—
Dew point26°
Wed, 2151° / 27°0
51 °
Cornish, Wednesday, 21 October
Mostly clear. High 51°, low 27°.
Pressure30.21 inHg
Wind6.7 mph W
Humidity44%
Visibility—
Dew point22°
Thu, 2252° / 31°0
52 °
Cornish, Thursday, 22 October
Overcast. High 52°, low 31°.
Pressure30.03 inHg
Wind7.5 mph W
Humidity62%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2352° / 37°0.13
52 °
Cornish, Friday, 23 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.13 in
Chance of precipitation38%
Record high72° (2024)
Record low22° (1969)
Sat, 2452° / 36°0.11
52 °
Cornish, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.11 in
Chance of precipitation33%
Record high73° (1963)
Record low17° (1969)
Sun, 2551° / 37°0.15
51 °
Cornish, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.15 in
Chance of precipitation35%
Record high76° (1963)
Record low26° (2002)
Mon, 2651° / 37°0.13
51 °
Cornish, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.13 in
Chance of precipitation35%
Record high74° (1963)
Record low26° (2018)
Tue, 2750° / 36°0.13
50 °
Cornish, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.13 in
Chance of precipitation25%
Record high73° (2023)
Record low24° (1976)
Wed, 2850° / 35°0.17
50 °
Cornish, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.17 in
Chance of precipitation35%
Record high72° (2023)
Record low24° (1974)
Thu, 2948° / 34°0.11
48 °
Cornish, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.11 in
Chance of precipitation33%
Record high65° (1989)
Record low24° (2013)
Fri, 3048° / 33°0.11
48 °
Cornish, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.11 in
Chance of precipitation23%
Record high65° (1989)
Record low25° (1978)
Sat, 3149° / 34°0.09
49 °
Cornish, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (2024)
Record low21° (2020)
Sun, 0150° / 35°0.1
50 °
Cornish, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.1 in
Chance of precipitation28%
Record high67° (1974)
Record low25° (1964)
Mon, 0249° / 35°0.1
49 °
Cornish, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.1 in
Chance of precipitation35%
Record high66° (2001)
Record low21° (2002)
Tue, 0349° / 35°0.16
49 °
Cornish, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.16 in
Chance of precipitation38%
Record high67° (1982)
Record low18° (2002)
Wed, 0448° / 34°0.1
48 °
Cornish, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.1 in
Chance of precipitation22%
Record high66° (1994)
Record low23° (2013)
Thu, 0547° / 34°0.13
47 °
Cornish, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.13 in
Chance of precipitation35%
Record high71° (2022)
Record low22° (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 Cornish, 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 Cornish, 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.