Monthly outlook for St. John, ME: average high 46.3°, average low 31.7°. That is 1.8° below the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 12 October (61.7°), the coolest 16 October (22.5°).
46.3°/31.7°
Average high / low
−1.8°
Below normal
4 / 6
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
48.2°
50.8°
-1.4°
19 October – 28 October
43.2°
46.8°
-2°
29 October – 7 November
at normal
42.9°
—
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).
Sat, 1047° / 34°0
47 °
St. John, Saturday, 10 October
Overcast. High 47°, low 34°.
Pressure30.33 inHg
Wind13.3 mph NW
Humidity59%
Visibility6.2 mi
Dew point26°
Sun, 1162° / 32°0
62 °
St. John, Sunday, 11 October
Overcast. High 62°, low 32°.
Pressure30.18 inHg
Wind10.1 mph SW
Humidity40%
Visibility6.2 mi
Dew point32°
Mon, 1262° / 39°0.19
62 °
St. John, Monday, 12 October
Light rain. High 62°, low 39°.
Pressure29.62 inHg
Wind8.8 mph W
Humidity64%
Visibility6.2 mi
Dew point49°
Tue, 1345° / 36°0.03
45 °
St. John, Tuesday, 13 October
Light rain. High 45°, low 36°.
Pressure30.09 inHg
Wind6.6 mph E
Humidity63%
Visibility6.2 mi
Dew point27°
Wed, 1439° / 36°0.46
39 °
St. John, Wednesday, 14 October
Light rain. High 39°, low 36°.
Pressure30.06 inHg
Wind7.6 mph E
Humidity99%
Visibility—
Dew point37°
Thu, 1539° / 22°0
39 °
St. John, Thursday, 15 October
Overcast. High 39°, low 22°.
Pressure30.12 inHg
Wind11.9 mph NW
Humidity95%
Visibility—
Dew point36°
Fri, 1648° / 22°0.04
48 °
St. John, Friday, 16 October
Light rain. High 48°, low 22°.
Pressure30.09 inHg
Wind11.3 mph S
Humidity99%
Visibility—
Dew point35°
Sat, 1753° / 38°0.16
53 °
St. John, Saturday, 17 October
Light rain. High 53°, low 38°.
Pressure29.68 inHg
Wind12.8 mph W
Humidity83%
Visibility—
Dew point43°
Sun, 1838° / 29°0
38 °
St. John, Sunday, 18 October
Light snow. High 38°, low 29°.
Pressure30.06 inHg
Wind10.4 mph W
Humidity63%
Visibility—
Dew point25°
Mon, 1941° / 28°0
41 °
St. John, Monday, 19 October
Clear. High 41°, low 28°.
Pressure30.39 inHg
Wind10.3 mph NW
Humidity46%
Visibility—
Dew point17°
Tue, 2047° / 27°0
47 °
St. John, Tuesday, 20 October
Mostly clear. High 47°, low 27°.
Pressure30.50 inHg
Wind5.1 mph W
Humidity48%
Visibility—
Dew point22°
Wed, 2142° / 28°0
42 °
St. John, Wednesday, 21 October
Light rain. High 42°, low 28°.
Pressure30.45 inHg
Wind5.3 mph NW
Humidity79%
Visibility—
Dew point33°
Thu, 2244° / 28°0
44 °
St. John, Thursday, 22 October
Overcast. High 44°, low 28°.
Pressure30.24 inHg
Wind6.7 mph S
Humidity75%
Visibility—
Dew point30°
Fri, 2347° / 36°0.18
47 °
St. John, Friday, 23 October
Light rain. High 47°, low 36°.
Pressure29.91 inHg
Wind7.5 mph W
Humidity96%
Visibility—
Dew point40°
Sat, 2439° / 29°0.01
39 °
St. John, Saturday, 24 October
Light snow. High 39°, low 29°.
Pressure30.06 inHg
Wind10.4 mph NW
Humidity74%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2547° / 34°0.12
47 °
St. John, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.12 in
Chance of precipitation37%
Record high71° (1963)
Record low22° (2003)
Mon, 2646° / 34°0.17
46 °
St. John, Monday, 26 October
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.17 in
Chance of precipitation35%
Record high67° (2022)
Record low23° (2018)
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)
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.