Monthly outlook for St. John, ME: average high 48.9°, average low 33°. That is 0.4° below the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 11 October (62.1°), the coolest 16 October (23.8°).
48.9°/33°
Average high / low
−0.4°
Below normal
5 / 6
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
47.9°
50.8°
-1.6°
19 October – 28 October
50.6°
46.8°
+2.1°
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
Wind13.1 mph NW
Humidity59%
Visibility6.2 mi
Dew point25°
Sun, 1162° / 30°0
62 °
St. John, Sunday, 11 October
Overcast. High 62°, low 30°.
Pressure30.21 inHg
Wind9.7 mph SW
Humidity38%
Visibility6.2 mi
Dew point32°
Mon, 1259° / 39°0.18
59 °
St. John, Monday, 12 October
Light rain. High 59°, low 39°.
Pressure29.65 inHg
Wind8.6 mph W
Humidity67%
Visibility6.2 mi
Dew point49°
Tue, 1337° / 33°0.59
37 °
St. John, Tuesday, 13 October
Snow. High 37°, low 33°.
Pressure30.03 inHg
Wind7.9 mph E
Humidity95%
Visibility1.9 mi
Dew point34°
Wed, 1441° / 33°0.24
41 °
St. John, Wednesday, 14 October
Snow. High 41°, low 33°.
Pressure30.00 inHg
Wind7.6 mph NE
Humidity95%
Visibility—
Dew point37°
Thu, 1539° / 24°0
39 °
St. John, Thursday, 15 October
Light rain. High 39°, low 24°.
Pressure30.06 inHg
Wind13.2 mph NW
Humidity89%
Visibility—
Dew point35°
Fri, 1652° / 24°0.22
52 °
St. John, Friday, 16 October
Rain. High 52°, low 24°.
Pressure30.06 inHg
Wind14.1 mph S
Humidity84%
Visibility—
Dew point33°
Sat, 1755° / 39°0.19
55 °
St. John, Saturday, 17 October
Rain. High 55°, low 39°.
Pressure29.56 inHg
Wind15.5 mph SW
Humidity74%
Visibility—
Dew point39°
Sun, 1835° / 26°0.01
35 °
St. John, Sunday, 18 October
Light snow. High 35°, low 26°.
Pressure30.06 inHg
Wind12 mph NW
Humidity58%
Visibility—
Dew point20°
Mon, 1941° / 26°0
41 °
St. John, Monday, 19 October
Clear. High 41°, low 26°.
Pressure30.45 inHg
Wind6.4 mph W
Humidity49%
Visibility—
Dew point19°
Tue, 2048° / 27°0
48 °
St. John, Tuesday, 20 October
Overcast. High 48°, low 27°.
Pressure30.47 inHg
Wind8.3 mph SW
Humidity46%
Visibility—
Dew point21°
Wed, 2150° / 30°0
50 °
St. John, Wednesday, 21 October
Overcast. High 50°, low 30°.
Pressure30.53 inHg
Wind6.5 mph SW
Humidity68%
Visibility—
Dew point33°
Thu, 2252° / 35°0
52 °
St. John, Thursday, 22 October
Overcast. High 52°, low 35°.
Pressure30.33 inHg
Wind8.3 mph SW
Humidity66%
Visibility—
Dew point36°
Fri, 2355° / 39°0
55 °
St. John, Friday, 23 October
Overcast. High 55°, low 39°.
Pressure30.24 inHg
Wind10.6 mph S
Humidity73%
Visibility—
Dew point40°
Sat, 2457° / 50°0
57 °
St. John, Saturday, 24 October
Overcast. High 57°, low 50°.
Pressure30.15 inHg
Wind12.1 mph SE
Humidity82%
Visibility—
Dew point49°
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.