Monthly outlook for Saint John, ME: average high 44.6°, average low 31.6°. That is 2.2° below the climate normal for October. Precipitation is expected on 7 days (about 2.6 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 24 October (57.3°), the coolest 19 October (17.9°).
44.6°/31.6°
Average high / low
−2.2°
Below normal
7 / 6
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
43.6°
49.7°
-3.4°
22 October – 31 October
46.2°
45.5°
+0.4°
1 November – 10 November
at normal
41.5°
—
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).
Tue, 1345° / 29°0.02
45 °
Saint John, Tuesday, 13 October
Light rain. High 45°, low 29°.
Pressure30.15 inHg
Wind6.6 mph SE
Humidity65%
Visibility6.2 mi
Dew point26°
Wed, 1445° / 38°0.38
45 °
Saint John, Wednesday, 14 October
Rain. High 45°, low 38°.
Pressure29.80 inHg
Wind6.5 mph E
Humidity99%
Visibility5.3 mi
Dew point42°
Thu, 1548° / 35°0.01
48 °
Saint John, Thursday, 15 October
Light rain. High 48°, low 35°.
Pressure30.09 inHg
Wind14.9 mph NW
Humidity59%
Visibility6.2 mi
Dew point28°
Fri, 1639° / 35°0.69
39 °
Saint John, Friday, 16 October
Snow. High 39°, low 35°.
Pressure29.83 inHg
Wind5.1 mph SE
Humidity88%
Visibility3.8 mi
Dew point33°
Sat, 1737° / 29°0.14
37 °
Saint John, Saturday, 17 October
Snow. High 37°, low 29°.
Pressure29.68 inHg
Wind15.4 mph NW
Humidity86%
Visibility—
Dew point33°
Sun, 1835° / 18°0
35 °
Saint John, Sunday, 18 October
Light rain. High 35°, low 18°.
Pressure30.24 inHg
Wind12.4 mph W
Humidity82%
Visibility—
Dew point27°
Mon, 1942° / 18°0
42 °
Saint John, Monday, 19 October
Overcast. High 42°, low 18°.
Pressure30.53 inHg
Wind10.5 mph S
Humidity69%
Visibility—
Dew point24°
Tue, 2048° / 37°0
48 °
Saint John, Tuesday, 20 October
Partly cloudy. High 48°, low 37°.
Pressure30.30 inHg
Wind10 mph W
Humidity80%
Visibility—
Dew point38°
Wed, 2146° / 31°0.01
46 °
Saint John, Wednesday, 21 October
Light rain. High 46°, low 31°.
Pressure30.12 inHg
Wind12 mph NW
Humidity79%
Visibility—
Dew point38°
Thu, 2244° / 28°0
44 °
Saint John, Thursday, 22 October
Clear. High 44°, low 28°.
Pressure30.30 inHg
Wind8.5 mph NW
Humidity63%
Visibility—
Dew point27°
Fri, 2349° / 32°0.33
49 °
Saint John, Friday, 23 October
Rain. High 49°, low 32°.
Pressure30.09 inHg
Wind8.4 mph SW
Humidity96%
Visibility—
Dew point36°
Sat, 2457° / 41°0.49
57 °
Saint John, Saturday, 24 October
Rain. High 57°, low 41°.
Pressure29.44 inHg
Wind16.2 mph W
Humidity92%
Visibility—
Dew point54°
Sun, 2539° / 35°0.42
39 °
Saint John, Sunday, 25 October
Snow. High 39°, low 35°.
Pressure29.77 inHg
Wind8.1 mph E
Humidity98%
Visibility—
Dew point36°
Mon, 2641° / 32°0
41 °
Saint John, Monday, 26 October
Overcast. High 41°, low 32°.
Pressure30.24 inHg
Wind4.7 mph SW
Humidity80%
Visibility—
Dew point34°
Tue, 2747° / 34°0
47 °
Saint John, Tuesday, 27 October
Clear. High 47°, low 34°.
Pressure30.24 inHg
Wind6.6 mph NW
Humidity74%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2845° / 32°0.17
45 °
Saint 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 °
Saint 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 °
Saint 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 °
Saint 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 °
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)
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.