Monthly outlook for Saint John, ME: average high 47.4°, average low 32.2°. That is 0.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 19 October (60°), the coolest 18 October (28.6°).
47.4°/32.2°
Average high / low
+0.5°
Above normal
5 / 6
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
49.8°
47.9°
+1.1°
26 October – 4 November
43.5°
43.9°
-0.2°
5 November – 14 November
at normal
39.2°
—
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 (13 mi).
Sat, 1740° / 32°0
40 °
Saint John, Saturday, 17 October
Clear. High 40°, low 32°.
Pressure29.94 inHg
Wind15.3 mph NW
Humidity71%
Visibility6.2 mi
Dew point19°
Sun, 1850° / 29°0
50 °
Saint John, Sunday, 18 October
Clear. High 50°, low 29°.
Pressure30.45 inHg
Wind5.9 mph W
Humidity62%
Visibility6.2 mi
Dew point26°
Mon, 1960° / 39°0
60 °
Saint John, Monday, 19 October
Clear. High 60°, low 39°.
Pressure30.33 inHg
Wind11 mph SW
Humidity53%
Visibility6.2 mi
Dew point39°
Tue, 2054° / 36°0
54 °
Saint John, Tuesday, 20 October
Clear. High 54°, low 36°.
Pressure30.39 inHg
Wind6.8 mph N
Humidity53%
Visibility6.2 mi
Dew point34°
Wed, 2151° / 32°0
51 °
Saint John, Wednesday, 21 October
Clear. High 51°, low 32°.
Pressure30.47 inHg
Wind5.1 mph S
Humidity62%
Visibility—
Dew point32°
Thu, 2252° / 33°0
52 °
Saint John, Thursday, 22 October
Partly cloudy. High 52°, low 33°.
Pressure30.33 inHg
Wind7.9 mph S
Humidity54%
Visibility—
Dew point29°
Fri, 2349° / 31°0
49 °
Saint John, Friday, 23 October
Partly cloudy. High 49°, low 31°.
Pressure30.15 inHg
Wind8.3 mph N
Humidity56%
Visibility—
Dew point32°
Sat, 2448° / 29°0
48 °
Saint John, Saturday, 24 October
Clear. High 48°, low 29°.
Pressure30.56 inHg
Wind7.9 mph NE
Humidity54%
Visibility—
Dew point25°
Sun, 2553° / 30°0
53 °
Saint John, Sunday, 25 October
Partly cloudy. High 53°, low 30°.
Pressure30.47 inHg
Wind3 mph SW
Humidity38%
Visibility—
Dew point21°
Mon, 2656° / 32°0
56 °
Saint John, Monday, 26 October
Clear. High 56°, low 32°.
Pressure30.12 inHg
Wind7 mph W
Humidity44%
Visibility—
Dew point26°
Tue, 2753° / 38°0.57
53 °
Saint John, Tuesday, 27 October
Rain. High 53°, low 38°.
Pressure29.74 inHg
Wind12.7 mph NW
Humidity51%
Visibility—
Dew point33°
Wed, 2840° / 31°0.05
40 °
Saint John, Wednesday, 28 October
Light snow. High 40°, low 31°.
Pressure29.80 inHg
Wind15.1 mph NW
Humidity73%
Visibility—
Dew point29°
Thu, 2940° / 29°0
40 °
Saint John, Thursday, 29 October
Clear. High 40°, low 29°.
Pressure30.06 inHg
Wind13.2 mph NW
Humidity50%
Visibility—
Dew point18°
Fri, 3036° / 29°0.24
36 °
Saint John, Friday, 30 October
Snow. High 36°, low 29°.
Pressure29.83 inHg
Wind9.2 mph SE
Humidity53%
Visibility—
Dew point19°
Sat, 3136° / 32°0.11
36 °
Saint John, Saturday, 31 October
Snow. High 36°, low 32°.
Pressure29.74 inHg
Wind7.9 mph N
Humidity100%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0145° / 32°0.11
45 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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)
Tue, 1039° / 28°0.1
39 °
Saint John, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.1 in
Chance of precipitation40%
Record high67° (2020)
Record low10° (1965)
Wed, 1139° / 28°0.13
39 °
Saint John, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.13 in
Chance of precipitation45%
Record high66° (2020)
Record low14° (1976)
Thu, 1237° / 26°0.15
37 °
Saint John, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high37°
Average low26°
Average precipitation0.15 in
Chance of precipitation33%
Record high61° (2020)
Record low9° (2004)
Fri, 1337° / 25°0.14
37 °
Saint John, Friday, 13 November
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.14 in
Chance of precipitation47%
Record high55° (1982)
Record low0° (2004)
Sat, 1436° / 24°0.11
36 °
Saint John, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.11 in
Chance of precipitation43%
Record high52° (2011)
Record low3° (2019)
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 Saint 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 Saint 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.