Monthly outlook for Portland, ME: average high 47.3°, average low 35.7°. That is 1.4° above the climate normal for November. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 23 November (55°), the coolest 12 November (29.8°).
47.3°/35.7°
Average high / low
+1.4°
Above normal
4 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 November – 20 November
46.6°
45.9°
+0.4°
21 November – 30 November
48.5°
42.8°
+3.2°
1 December – 10 December
at normal
39.2°
—
November records over 66 years
76.8°6 November 2024All-time high
6.1°22 November 2018All-time low
Thu, 1245° / 30°0.09
45 °
Portland, Thursday, 12 November
Light rain. High 45°, low 30°.
Pressure29.77 inHg
Wind4.5 mph E
Humidity60%
Visibility6.2 mi
Dew point31°
Fri, 1338° / 34°0.33
38 °
Portland, Friday, 13 November
Snow. High 38°, low 34°.
Pressure29.53 inHg
Wind12.4 mph N
Humidity82%
Visibility6.2 mi
Dew point30°
Sat, 1444° / 35°0
44 °
Portland, Saturday, 14 November
Overcast. High 44°, low 35°.
Pressure29.59 inHg
Wind10.8 mph NW
Humidity62%
Visibility6.2 mi
Dew point27°
Sun, 1546° / 37°0
46 °
Portland, Sunday, 15 November
Overcast. High 46°, low 37°.
Pressure29.77 inHg
Wind14.5 mph NW
Humidity62%
Visibility—
Dew point31°
Mon, 1647° / 37°0
47 °
Portland, Monday, 16 November
Mostly clear. High 47°, low 37°.
Pressure30.09 inHg
Wind9.5 mph NW
Humidity61%
Visibility—
Dew point31°
Tue, 1748° / 34°0
48 °
Portland, Tuesday, 17 November
Clear. High 48°, low 34°.
Pressure30.42 inHg
Wind4 mph NW
Humidity59%
Visibility—
Dew point29°
Wed, 1846° / 35°0
46 °
Portland, Wednesday, 18 November
Overcast. High 46°, low 35°.
Pressure30.33 inHg
Wind6.8 mph N
Humidity61%
Visibility—
Dew point28°
Thu, 1950° / 35°0
50 °
Portland, Thursday, 19 November
Clear. High 50°, low 35°.
Pressure30.27 inHg
Wind9.2 mph N
Humidity51%
Visibility—
Dew point27°
Fri, 2052° / 38°0
52 °
Portland, Friday, 20 November
Clear. High 52°, low 38°.
Pressure30.27 inHg
Wind4.8 mph N
Humidity48%
Visibility—
Dew point27°
Sat, 2152° / 41°0
52 °
Portland, Saturday, 21 November
Overcast. High 52°, low 41°.
Pressure30.21 inHg
Wind4.7 mph S
Humidity52%
Visibility—
Dew point31°
Sun, 2254° / 42°0.1
54 °
Portland, Sunday, 22 November
Light rain. High 54°, low 42°.
Pressure30.06 inHg
Wind17.4 mph S
Humidity89%
Visibility—
Dew point46°
Mon, 2355° / 43°0.04
55 °
Portland, Monday, 23 November
Light rain. High 55°, low 43°.
Pressure29.74 inHg
Wind10.5 mph W
Humidity67%
Visibility—
Dew point41°
Tue, 2447° / 36°0.01
47 °
Portland, Tuesday, 24 November
Light snow. High 47°, low 36°.
Pressure29.83 inHg
Wind15.5 mph N
Humidity64%
Visibility—
Dew point31°
Wed, 2540° / 30°0
40 °
Portland, Wednesday, 25 November
Clear. High 40°, low 30°.
Pressure30.06 inHg
Wind16.4 mph NW
Humidity37%
Visibility—
Dew point12°
Thu, 2642° / 33°0
42 °
Portland, Thursday, 26 November
Overcast. High 42°, low 33°.
Pressure30.27 inHg
Wind10.7 mph SW
Humidity59%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2743° / 33°0.17
43 °
Portland, Friday, 27 November
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.17 in
Chance of precipitation42%
Record high57° (1979)
Record low13° (1978)
Sat, 2844° / 33°0.2
44 °
Portland, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.2 in
Chance of precipitation38%
Record high60° (2011)
Record low20° (1996)
Sun, 2942° / 33°0.11
42 °
Portland, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high42°
Average low33°
Average precipitation0.11 in
Chance of precipitation30%
Record high59° (1990)
Record low16° (1989)
Mon, 3042° / 31°0.11
42 °
Portland, Monday, 30 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.11 in
Chance of precipitation27%
Record high58° (2006)
Record low17° (1989)
Tue, 0142° / 31°0.14
42 °
Portland, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.14 in
Chance of precipitation30%
Record high61° (2001)
Record low11° (1989)
Wed, 0241° / 30°0.13
41 °
Portland, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.13 in
Chance of precipitation30%
Record high55° (1998)
Record low11° (1989)
Thu, 0341° / 30°0.18
41 °
Portland, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.18 in
Chance of precipitation35%
Record high62° (2009)
Record low5° (1976)
Fri, 0439° / 29°0.12
39 °
Portland, Friday, 4 December
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.12 in
Chance of precipitation25%
Record high62° (1982)
Record low11° (1989)
Sat, 0538° / 28°0.12
38 °
Portland, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high38°
Average low28°
Average precipitation0.12 in
Chance of precipitation23%
Record high56° (2001)
Record low1° (2025)
Sun, 0640° / 29°0.14
40 °
Portland, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.14 in
Chance of precipitation38%
Record high63° (2001)
Record low7° (2025)
Mon, 0739° / 28°0.14
39 °
Portland, Monday, 7 December
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.14 in
Chance of precipitation37%
Record high64° (1998)
Record low10° (1989)
Tue, 0836° / 25°0.09
36 °
Portland, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high36°
Average low25°
Average precipitation0.09 in
Chance of precipitation28%
Record high51° (2022)
Record low6° (2025)
Wed, 0937° / 25°0.17
37 °
Portland, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.17 in
Chance of precipitation37%
Record high53° (1991)
Record low-1° (2025)
Thu, 1038° / 27°0.08
38 °
Portland, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.08 in
Chance of precipitation37%
Record high56° (2019)
Record low5° (1976)
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 Portland, 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 Portland, 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.