Monthly outlook for Sumner, ME: average high 55.3°, average low 39.1°. That is 0.5° below the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 11 October (69.1°), the coolest 21 October (29.5°).
55.3°/39.1°
Average high / low
−0.5°
Below normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
57.4°
57.5°
-0.1°
17 October – 26 October
51.9°
53.6°
-1°
27 October – 5 November
at normal
49.8°
—
October records over 66 years
83.8°6 October 2025All-time high
13.1°30 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Canton (10 mi).
Thu, 0859° / 46°0.15
59 °
Sumner, Thursday, 8 October
Rain. High 59°, low 46°.
Pressure29.68 inHg
Wind7.3 mph W
Humidity70%
Visibility6.2 mi
Dew point51°
Fri, 0956° / 43°0.03
56 °
Sumner, Friday, 9 October
Light rain. High 56°, low 43°.
Pressure29.97 inHg
Wind11.6 mph W
Humidity60%
Visibility6.2 mi
Dew point42°
Sat, 1057° / 40°0
57 °
Sumner, Saturday, 10 October
Clear. High 57°, low 40°.
Pressure30.39 inHg
Wind10.5 mph NW
Humidity45%
Visibility6.2 mi
Dew point33°
Sun, 1169° / 43°0
69 °
Sumner, Sunday, 11 October
Overcast. High 69°, low 43°.
Pressure30.24 inHg
Wind6 mph SW
Humidity52%
Visibility—
Dew point41°
Mon, 1259° / 46°0.09
59 °
Sumner, Monday, 12 October
Light rain. High 59°, low 46°.
Pressure29.80 inHg
Wind6.8 mph S
Humidity99%
Visibility—
Dew point56°
Tue, 1348° / 38°0
48 °
Sumner, Tuesday, 13 October
Overcast. High 48°, low 38°.
Pressure30.03 inHg
Wind6.7 mph NW
Humidity45%
Visibility—
Dew point24°
Wed, 1452° / 33°0
52 °
Sumner, Wednesday, 14 October
Mostly clear. High 52°, low 33°.
Pressure30.27 inHg
Wind9.2 mph NE
Humidity49%
Visibility—
Dew point27°
Thu, 1555° / 33°0
55 °
Sumner, Thursday, 15 October
Clear. High 55°, low 33°.
Pressure30.45 inHg
Wind8.1 mph NE
Humidity51%
Visibility—
Dew point30°
Fri, 1658° / 45°0
58 °
Sumner, Friday, 16 October
Overcast. High 58°, low 45°.
Pressure30.24 inHg
Wind3.4 mph S
Humidity71%
Visibility—
Dew point41°
Sat, 1758° / 53°0.48
58 °
Sumner, Saturday, 17 October
Rain. High 58°, low 53°.
Pressure29.91 inHg
Wind3.6 mph NE
Humidity89%
Visibility—
Dew point54°
Sun, 1859° / 39°0.22
59 °
Sumner, Sunday, 18 October
Light rain. High 59°, low 39°.
Pressure29.15 inHg
Wind14.4 mph W
Humidity90%
Visibility—
Dew point49°
Mon, 1944° / 33°0
44 °
Sumner, Monday, 19 October
Mostly clear. High 44°, low 33°.
Pressure29.85 inHg
Wind15.3 mph W
Humidity36%
Visibility—
Dew point17°
Tue, 2044° / 33°0
44 °
Sumner, Tuesday, 20 October
Mostly clear. High 44°, low 33°.
Pressure30.00 inHg
Wind15.7 mph NW
Humidity52%
Visibility—
Dew point26°
Wed, 2152° / 29°0
52 °
Sumner, Wednesday, 21 October
Mostly clear. High 52°, low 29°.
Pressure30.12 inHg
Wind9.1 mph W
Humidity44%
Visibility—
Dew point24°
Thu, 2255° / 33°0
55 °
Sumner, Thursday, 22 October
Overcast. High 55°, low 33°.
Pressure30.00 inHg
Wind4.1 mph SW
Humidity54%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2353° / 38°0.18
53 °
Sumner, Friday, 23 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.18 in
Chance of precipitation32%
Record high71° (1979)
Record low27° (1969)
Sat, 2453° / 38°0.15
53 °
Sumner, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.15 in
Chance of precipitation35%
Record high75° (1963)
Record low25° (1969)
Sun, 2553° / 39°0.14
53 °
Sumner, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.14 in
Chance of precipitation28%
Record high76° (1963)
Record low27° (1981)
Mon, 2652° / 39°0.17
52 °
Sumner, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.17 in
Chance of precipitation33%
Record high76° (1963)
Record low28° (2018)
Tue, 2751° / 38°0.12
51 °
Sumner, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.12 in
Chance of precipitation28%
Record high73° (2023)
Record low26° (1976)
Wed, 2851° / 37°0.18
51 °
Sumner, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.18 in
Chance of precipitation37%
Record high75° (2023)
Record low26° (1974)
Thu, 2951° / 35°0.12
51 °
Sumner, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.12 in
Chance of precipitation28%
Record high68° (1989)
Record low24° (2024)
Fri, 3049° / 35°0.16
49 °
Sumner, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.16 in
Chance of precipitation22%
Record high68° (1989)
Record low13° (1962)
Sat, 3151° / 35°0.11
51 °
Sumner, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.11 in
Chance of precipitation25%
Record high74° (2024)
Record low24° (2020)
Sun, 0151° / 36°0.11
51 °
Sumner, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.11 in
Chance of precipitation30%
Record high70° (2024)
Record low26° (2023)
Mon, 0249° / 36°0.2
49 °
Sumner, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.2 in
Chance of precipitation32%
Record high64° (2001)
Record low21° (2002)
Tue, 0349° / 36°0.24
49 °
Sumner, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.24 in
Chance of precipitation40%
Record high65° (1990)
Record low20° (2002)
Wed, 0449° / 35°0.08
49 °
Sumner, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.08 in
Chance of precipitation30%
Record high67° (1990)
Record low23° (2020)
Thu, 0548° / 35°0.17
48 °
Sumner, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.17 in
Chance of precipitation35%
Record high71° (2022)
Record low23° (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 Sumner, 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 Sumner, 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.