Monthly outlook for Sullivan, ME: average high 56.2°, average low 42.9°. That is 0.7° above the climate normal for October. Precipitation is expected on 7 days (about 1.0 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 17 October (67°), the coolest 20 October (33.7°).
56.2°/42.9°
Average high / low
+0.7°
Above normal
7 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
58°
55.9°
+1.2°
18 October – 27 October
53.2°
52.9°
+0.2°
28 October – 6 November
at normal
49.9°
—
October records over 66 years
79.7°3 October 2023All-time high
27.7°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Sorrento (3 mi).
Fri, 0960° / 47°0.02
60 °
Sullivan, Friday, 9 October
Light rain. High 60°, low 47°.
Pressure29.91 inHg
Wind11.4 mph W
Humidity52%
Visibility6.2 mi
Dew point42°
Sat, 1054° / 43°0
54 °
Sullivan, Saturday, 10 October
Clear. High 54°, low 43°.
Pressure30.36 inHg
Wind12.2 mph NW
Humidity48%
Visibility6.2 mi
Dew point31°
Sun, 1157° / 41°0
57 °
Sullivan, Sunday, 11 October
Overcast. High 57°, low 41°.
Pressure30.39 inHg
Wind9.6 mph SW
Humidity48%
Visibility6.2 mi
Dew point37°
Mon, 1264° / 51°0.06
64 °
Sullivan, Monday, 12 October
Light rain. High 64°, low 51°.
Pressure29.74 inHg
Wind3.7 mph W
Humidity76%
Visibility6.2 mi
Dew point51°
Tue, 1351° / 47°0.25
51 °
Sullivan, Tuesday, 13 October
Light rain. High 51°, low 47°.
Pressure29.80 inHg
Wind11.7 mph NE
Humidity98%
Visibility—
Dew point48°
Wed, 1454° / 46°0.12
54 °
Sullivan, Wednesday, 14 October
Light rain. High 54°, low 46°.
Pressure29.77 inHg
Wind17.9 mph NW
Humidity86%
Visibility—
Dew point45°
Thu, 1555° / 41°0
55 °
Sullivan, Thursday, 15 October
Clear. High 55°, low 41°.
Pressure30.21 inHg
Wind11.6 mph N
Humidity50%
Visibility—
Dew point31°
Fri, 1656° / 42°0.1
56 °
Sullivan, Friday, 16 October
Light rain. High 56°, low 42°.
Pressure30.24 inHg
Wind14.3 mph S
Humidity72%
Visibility—
Dew point41°
Sat, 1767° / 47°0.07
67 °
Sullivan, Saturday, 17 October
Light rain. High 67°, low 47°.
Pressure29.85 inHg
Wind14.3 mph NW
Humidity78%
Visibility—
Dew point58°
Sun, 1849° / 38°0
49 °
Sullivan, Sunday, 18 October
Clear. High 49°, low 38°.
Pressure30.33 inHg
Wind13.4 mph N
Humidity48%
Visibility—
Dew point26°
Mon, 1954° / 37°0
54 °
Sullivan, Monday, 19 October
Overcast. High 54°, low 37°.
Pressure30.33 inHg
Wind11.6 mph SW
Humidity56%
Visibility—
Dew point34°
Tue, 2050° / 34°0
50 °
Sullivan, Tuesday, 20 October
Clear. High 50°, low 34°.
Pressure30.59 inHg
Wind5.8 mph N
Humidity41%
Visibility—
Dew point21°
Wed, 2154° / 42°0.14
54 °
Sullivan, Wednesday, 21 October
Rain. High 54°, low 42°.
Pressure30.36 inHg
Wind14 mph SW
Humidity71%
Visibility—
Dew point42°
Thu, 2262° / 46°0.01
62 °
Sullivan, Thursday, 22 October
Light rain. High 62°, low 46°.
Pressure30.00 inHg
Wind9.7 mph W
Humidity69%
Visibility—
Dew point47°
Fri, 2350° / 36°0
50 °
Sullivan, Friday, 23 October
Overcast. High 50°, low 36°.
Pressure30.15 inHg
Wind8.9 mph NW
Humidity56%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2453° / 43°0.15
53 °
Sullivan, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.15 in
Chance of precipitation30%
Record high69° (1963)
Record low29° (1969)
Sun, 2553° / 43°0.11
53 °
Sullivan, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.11 in
Chance of precipitation27%
Record high66° (1963)
Record low32° (2018)
Mon, 2652° / 43°0.18
52 °
Sullivan, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.18 in
Chance of precipitation37%
Record high69° (2023)
Record low30° (2018)
Tue, 2751° / 42°0.15
51 °
Sullivan, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation32%
Record high70° (2023)
Record low29° (2018)
Wed, 2851° / 41°0.17
51 °
Sullivan, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.17 in
Chance of precipitation33%
Record high74° (2023)
Record low30° (1974)
Thu, 2951° / 40°0.13
51 °
Sullivan, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.13 in
Chance of precipitation28%
Record high65° (1989)
Record low29° (2024)
Fri, 3049° / 39°0.17
49 °
Sullivan, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.17 in
Chance of precipitation30%
Record high62° (2022)
Record low31° (2002)
Sat, 3150° / 40°0.13
50 °
Sullivan, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.13 in
Chance of precipitation27%
Record high73° (2024)
Record low28° (2020)
Sun, 0151° / 42°0.11
51 °
Sullivan, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation32%
Record high72° (2024)
Record low29° (2023)
Mon, 0250° / 41°0.16
50 °
Sullivan, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.16 in
Chance of precipitation35%
Record high59° (1971)
Record low25° (2002)
Tue, 0350° / 40°0.24
50 °
Sullivan, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.24 in
Chance of precipitation45%
Record high63° (2017)
Record low24° (2002)
Wed, 0449° / 40°0.07
49 °
Sullivan, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.07 in
Chance of precipitation28%
Record high61° (1990)
Record low26° (2020)
Thu, 0549° / 40°0.15
49 °
Sullivan, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.15 in
Chance of precipitation40%
Record high65° (2022)
Record low25° (1965)
Fri, 0649° / 41°0.18
49 °
Sullivan, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.18 in
Chance of precipitation43%
Record high69° (2024)
Record low29° (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 Sullivan, ME 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, ME 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.