Monthly outlook for St. John, ME: average high 43.7°, average low 30.3°. That is 2.9° below the climate normal for October. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 11 October (59.9°), the coolest 19 October (23.8°).
43.7°/30.3°
Average high / low
−2.9°
Below normal
6 / 6
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
44.8°
50.1°
-3°
21 October – 30 October
42°
45.9°
-2.2°
31 October – 9 November
at normal
42°
—
October records over 66 years
79.5°6 October 2025All-time high
14.9°30 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Eagle Lake (10 mi).
Mon, 1255° / 35°0.1
55 °
St. John, Monday, 12 October
Light rain. High 55°, low 35°.
Pressure29.71 inHg
Wind12.7 mph N
Humidity94%
Visibility3.1 mi
Dew point49°
Tue, 1343° / 31°0.06
43 °
St. John, Tuesday, 13 October
Light rain. High 43°, low 31°.
Pressure30.15 inHg
Wind6.2 mph SE
Humidity62%
Visibility6.2 mi
Dew point25°
Wed, 1442° / 35°0.33
42 °
St. John, Wednesday, 14 October
Light rain. High 42°, low 35°.
Pressure29.91 inHg
Wind6.9 mph E
Humidity99%
Visibility5.2 mi
Dew point40°
Thu, 1546° / 33°0.02
46 °
St. John, Thursday, 15 October
Light rain. High 46°, low 33°.
Pressure30.03 inHg
Wind16.6 mph NW
Humidity61%
Visibility—
Dew point31°
Fri, 1639° / 30°0.36
39 °
St. John, Friday, 16 October
Snow. High 39°, low 30°.
Pressure29.88 inHg
Wind7.1 mph NW
Humidity72%
Visibility—
Dew point30°
Sat, 1741° / 29°0.07
41 °
St. John, Saturday, 17 October
Light rain. High 41°, low 29°.
Pressure29.47 inHg
Wind15 mph W
Humidity90%
Visibility—
Dew point35°
Sun, 1834° / 24°0
34 °
St. John, Sunday, 18 October
Overcast. High 34°, low 24°.
Pressure30.12 inHg
Wind14.2 mph N
Humidity58%
Visibility—
Dew point18°
Mon, 1943° / 24°0
43 °
St. John, Monday, 19 October
Mostly clear. High 43°, low 24°.
Pressure30.47 inHg
Wind7.6 mph SW
Humidity51%
Visibility—
Dew point19°
Tue, 2045° / 33°0.02
45 °
St. John, Tuesday, 20 October
Light rain. High 45°, low 33°.
Pressure30.18 inHg
Wind6.2 mph W
Humidity72%
Visibility—
Dew point35°
Wed, 2138° / 27°0
38 °
St. John, Wednesday, 21 October
Partly cloudy. High 38°, low 27°.
Pressure30.45 inHg
Wind9.4 mph NW
Humidity71%
Visibility—
Dew point28°
Thu, 2242° / 26°0
42 °
St. John, Thursday, 22 October
Partly cloudy. High 42°, low 26°.
Pressure30.53 inHg
Wind7.1 mph N
Humidity68%
Visibility—
Dew point28°
Fri, 2347° / 27°0
47 °
St. John, Friday, 23 October
Mostly clear. High 47°, low 27°.
Pressure30.42 inHg
Wind2.4 mph W
Humidity63%
Visibility—
Dew point29°
Sat, 2449° / 34°0
49 °
St. John, Saturday, 24 October
Light rain. High 49°, low 34°.
Pressure30.21 inHg
Wind3.1 mph E
Humidity64%
Visibility—
Dew point32°
Sun, 2539° / 33°0.33
39 °
St. John, Sunday, 25 October
Snow. High 39°, low 33°.
Pressure29.97 inHg
Wind8.5 mph N
Humidity99%
Visibility—
Dew point36°
Mon, 2637° / 32°0
37 °
St. John, Monday, 26 October
Overcast. High 37°, low 32°.
Pressure29.94 inHg
Wind6.3 mph NW
Humidity76%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2745° / 32°0.13
45 °
St. John, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.13 in
Chance of precipitation37%
Record high64° (2000)
Record low19° (2018)
Wed, 2845° / 32°0.17
45 °
St. John, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.17 in
Chance of precipitation50%
Record high66° (2023)
Record low17° (1976)
Thu, 2945° / 32°0.1
45 °
St. John, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.1 in
Chance of precipitation28%
Record high62° (1989)
Record low22° (1965)
Fri, 3043° / 31°0.08
43 °
St. John, Friday, 30 October
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.08 in
Chance of precipitation27%
Record high63° (1989)
Record low15° (1962)
Sat, 3144° / 32°0.1
44 °
St. John, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.1 in
Chance of precipitation25%
Record high68° (2024)
Record low18° (1997)
Sun, 0145° / 32°0.11
45 °
St. John, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation33%
Record high62° (2019)
Record low19° (1972)
Mon, 0243° / 31°0.13
43 °
St. John, Monday, 2 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.13 in
Chance of precipitation38%
Record high60° (2001)
Record low13° (1993)
Tue, 0342° / 31°0.15
42 °
St. John, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.15 in
Chance of precipitation48%
Record high60° (1977)
Record low8° (1993)
Wed, 0442° / 30°0.09
42 °
St. John, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.09 in
Chance of precipitation42%
Record high62° (2022)
Record low9° (2002)
Thu, 0542° / 30°0.15
42 °
St. John, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.15 in
Chance of precipitation35%
Record high67° (2022)
Record low16° (1965)
Fri, 0642° / 31°0.11
42 °
St. John, Friday, 6 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.11 in
Chance of precipitation38%
Record high70° (2022)
Record low13° (1962)
Sat, 0741° / 30°0.07
41 °
St. John, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.07 in
Chance of precipitation33%
Record high61° (2022)
Record low5° (1962)
Sun, 0839° / 28°0.06
39 °
St. John, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.06 in
Chance of precipitation32%
Record high57° (1996)
Record low2° (2002)
Mon, 0939° / 28°0.07
39 °
St. John, Monday, 9 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.07 in
Chance of precipitation30%
Record high62° (2020)
Record low14° (1965)
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 St. John, 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 St. John, 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.