Monthly outlook for Sullivan, NH: average high 57°, average low 40.4°. That is 1° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 13 October (64.3°), the coolest 19 October (32°).
57°/40.4°
Average high / low
+1°
Above normal
5 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
58.8°
56.2°
+1.5°
19 October – 28 October
53.9°
52.6°
+0.7°
29 October – 7 November
at normal
49°
—
October records over 66 years
80.1°4 October 2023All-time high
18°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Acworth (14 mi).
Sat, 1058° / 38°0
58 °
Sullivan, Saturday, 10 October
Mostly clear. High 58°, low 38°.
Pressure30.47 inHg
Wind5.7 mph NW
Humidity42%
Visibility6.2 mi
Dew point31°
Sun, 1158° / 40°0.09
58 °
Sullivan, Sunday, 11 October
Rain. High 58°, low 40°.
Pressure30.39 inHg
Wind7.2 mph S
Humidity55%
Visibility6.2 mi
Dew point42°
Mon, 1264° / 48°0.4
64 °
Sullivan, Monday, 12 October
Rain. High 64°, low 48°.
Pressure29.77 inHg
Wind3.5 mph N
Humidity88%
Visibility6.2 mi
Dew point52°
Tue, 1364° / 47°0.1
64 °
Sullivan, Tuesday, 13 October
Light rain. High 64°, low 47°.
Pressure29.71 inHg
Wind7.5 mph E
Humidity69%
Visibility—
Dew point51°
Wed, 1455° / 47°0.18
55 °
Sullivan, Wednesday, 14 October
Light rain. High 55°, low 47°.
Pressure29.88 inHg
Wind12.5 mph N
Humidity79%
Visibility—
Dew point43°
Thu, 1557° / 40°0
57 °
Sullivan, Thursday, 15 October
Overcast. High 57°, low 40°.
Pressure30.24 inHg
Wind6.3 mph NW
Humidity51%
Visibility—
Dew point32°
Fri, 1662° / 47°0.4
62 °
Sullivan, Friday, 16 October
Rain. High 62°, low 47°.
Pressure30.15 inHg
Wind10.6 mph S
Humidity97%
Visibility—
Dew point49°
Sat, 1762° / 41°0.03
62 °
Sullivan, Saturday, 17 October
Light rain. High 62°, low 41°.
Pressure29.94 inHg
Wind13.3 mph W
Humidity81%
Visibility—
Dew point55°
Sun, 1848° / 34°0
48 °
Sullivan, Sunday, 18 October
Clear. High 48°, low 34°.
Pressure30.45 inHg
Wind9.6 mph N
Humidity48%
Visibility—
Dew point23°
Mon, 1953° / 32°0
53 °
Sullivan, Monday, 19 October
Overcast. High 53°, low 32°.
Pressure30.39 inHg
Wind9.6 mph W
Humidity48%
Visibility—
Dew point26°
Tue, 2054° / 32°0
54 °
Sullivan, Tuesday, 20 October
Clear. High 54°, low 32°.
Pressure30.59 inHg
Wind4 mph S
Humidity42%
Visibility—
Dew point24°
Wed, 2154° / 39°0
54 °
Sullivan, Wednesday, 21 October
Light rain. High 54°, low 39°.
Pressure30.33 inHg
Wind10.3 mph SW
Humidity72%
Visibility—
Dew point41°
Thu, 2260° / 45°0
60 °
Sullivan, Thursday, 22 October
Overcast. High 60°, low 45°.
Pressure30.09 inHg
Wind11.2 mph NW
Humidity50%
Visibility—
Dew point38°
Fri, 2352° / 38°0
52 °
Sullivan, Friday, 23 October
Light rain. High 52°, low 38°.
Pressure30.09 inHg
Wind9.8 mph N
Humidity66%
Visibility—
Dew point39°
Sat, 2449° / 35°0
49 °
Sullivan, Saturday, 24 October
Overcast. High 49°, low 35°.
Pressure30.39 inHg
Wind5.4 mph SE
Humidity49%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2552° / 38°0.17
52 °
Sullivan, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.17 in
Chance of precipitation33%
Record high76° (1963)
Record low26° (2002)
Mon, 2651° / 37°0.13
51 °
Sullivan, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.13 in
Chance of precipitation32%
Record high74° (1963)
Record low25° (2018)
Tue, 2751° / 37°0.13
51 °
Sullivan, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.13 in
Chance of precipitation22%
Record high73° (1963)
Record low24° (1976)
Wed, 2851° / 35°0.17
51 °
Sullivan, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.17 in
Chance of precipitation30%
Record high72° (2023)
Record low23° (1976)
Thu, 2949° / 34°0.11
49 °
Sullivan, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.11 in
Chance of precipitation33%
Record high66° (1989)
Record low24° (2005)
Fri, 3049° / 34°0.11
49 °
Sullivan, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.11 in
Chance of precipitation23%
Record high66° (1989)
Record low24° (2020)
Sat, 3150° / 35°0.08
50 °
Sullivan, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.08 in
Chance of precipitation27%
Record high74° (2024)
Record low18° (2020)
Sun, 0151° / 36°0.1
51 °
Sullivan, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.1 in
Chance of precipitation32%
Record high68° (1974)
Record low26° (1964)
Mon, 0250° / 36°0.1
50 °
Sullivan, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.1 in
Chance of precipitation33%
Record high69° (1982)
Record low21° (1965)
Tue, 0350° / 35°0.16
50 °
Sullivan, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.16 in
Chance of precipitation38%
Record high66° (1982)
Record low19° (2002)
Wed, 0449° / 35°0.09
49 °
Sullivan, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.09 in
Chance of precipitation23%
Record high68° (1994)
Record low23° (2020)
Thu, 0548° / 35°0.13
48 °
Sullivan, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.13 in
Chance of precipitation33%
Record high70° (2022)
Record low24° (1965)
Fri, 0647° / 35°0.13
47 °
Sullivan, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.13 in
Chance of precipitation35%
Record high71° (2024)
Record low24° (2012)
Sat, 0747° / 33°0.06
47 °
Sullivan, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation33%
Record high67° (2020)
Record low16° (2002)
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 Sullivan, 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 Sullivan, 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.