Monthly outlook for Derby, ME: average high 54.3°, average low 38.8°. That is 0.2° above the climate normal for October. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 5 days and 2.4 inches. The warmest day looks like 12 October (70.4°), the coolest 19 October (29°).
54.3°/38.8°
Average high / low
+0.2°
Above normal
6 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
55.1°
55°
+0°
19 October – 28 October
53°
51.4°
+0.9°
29 October – 7 November
at normal
47.4°
—
October records over 66 years
83.3°6 October 2025All-time high
24.6°27 October 2018All-time low
Climate normals and records are computed from the nearest reference point — Schoodic (14 mi).
Sat, 1055° / 39°0
55 °
Derby, Saturday, 10 October
Clear. High 55°, low 39°.
Pressure30.36 inHg
Wind10.8 mph NW
Humidity45%
Visibility6.2 mi
Dew point28°
Sun, 1159° / 39°0
59 °
Derby, Sunday, 11 October
Overcast. High 59°, low 39°.
Pressure30.33 inHg
Wind8.7 mph SW
Humidity51%
Visibility6.2 mi
Dew point37°
Mon, 1270° / 48°0.01
70 °
Derby, Monday, 12 October
Light rain. High 70°, low 48°.
Pressure29.68 inHg
Wind3.8 mph SW
Humidity53%
Visibility6.2 mi
Dew point47°
Tue, 1345° / 42°0.8
45 °
Derby, Tuesday, 13 October
Rain. High 45°, low 42°.
Pressure30.03 inHg
Wind8.4 mph E
Humidity98%
Visibility3.2 mi
Dew point41°
Wed, 1452° / 43°0.29
52 °
Derby, Wednesday, 14 October
Rain. High 52°, low 43°.
Pressure29.77 inHg
Wind10.7 mph NW
Humidity89%
Visibility—
Dew point44°
Thu, 1551° / 36°0
51 °
Derby, Thursday, 15 October
Mostly clear. High 51°, low 36°.
Pressure29.88 inHg
Wind15.5 mph NW
Humidity53%
Visibility—
Dew point31°
Fri, 1653° / 34°0.08
53 °
Derby, Friday, 16 October
Light rain. High 53°, low 34°.
Pressure30.21 inHg
Wind11.8 mph S
Humidity61%
Visibility—
Dew point30°
Sat, 1761° / 50°0.51
61 °
Derby, Saturday, 17 October
Rain. High 61°, low 50°.
Pressure29.68 inHg
Wind11.1 mph SW
Humidity96%
Visibility—
Dew point60°
Sun, 1848° / 32°0.1
48 °
Derby, Sunday, 18 October
Light rain. High 48°, low 32°.
Pressure30.09 inHg
Wind11.7 mph NW
Humidity77%
Visibility—
Dew point37°
Mon, 1951° / 29°0
51 °
Derby, Monday, 19 October
Partly cloudy. High 51°, low 29°.
Pressure30.39 inHg
Wind6.6 mph W
Humidity41%
Visibility—
Dew point21°
Tue, 2046° / 29°0
46 °
Derby, Tuesday, 20 October
Clear. High 46°, low 29°.
Pressure30.62 inHg
Wind6.6 mph N
Humidity40%
Visibility—
Dew point19°
Wed, 2151° / 29°0
51 °
Derby, Wednesday, 21 October
Overcast. High 51°, low 29°.
Pressure30.65 inHg
Wind8.1 mph SW
Humidity40%
Visibility—
Dew point20°
Thu, 2255° / 33°0
55 °
Derby, Thursday, 22 October
Overcast. High 55°, low 33°.
Pressure30.47 inHg
Wind7.9 mph SW
Humidity77%
Visibility—
Dew point38°
Fri, 2358° / 44°0.01
58 °
Derby, Friday, 23 October
Light rain. High 58°, low 44°.
Pressure30.27 inHg
Wind7.3 mph S
Humidity80%
Visibility—
Dew point47°
Sat, 2458° / 50°0.51
58 °
Derby, Saturday, 24 October
Rain. High 58°, low 50°.
Pressure29.97 inHg
Wind8.9 mph SE
Humidity98%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2551° / 39°0.15
51 °
Derby, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.15 in
Chance of precipitation37%
Record high74° (1963)
Record low28° (2003)
Mon, 2650° / 39°0.2
50 °
Derby, Monday, 26 October
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.2 in
Chance of precipitation38%
Record high73° (1963)
Record low27° (2018)
Tue, 2750° / 37°0.11
50 °
Derby, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high70° (2023)
Record low25° (2018)
Wed, 2850° / 37°0.2
50 °
Derby, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.2 in
Chance of precipitation33%
Record high72° (2023)
Record low26° (1976)
Thu, 2949° / 36°0.13
49 °
Derby, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.13 in
Chance of precipitation27%
Record high67° (1989)
Record low26° (1965)
Fri, 3047° / 35°0.16
47 °
Derby, Friday, 30 October
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.16 in
Chance of precipitation25%
Record high67° (1989)
Record low25° (1962)
Sat, 3149° / 36°0.13
49 °
Derby, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.13 in
Chance of precipitation23%
Record high70° (2024)
Record low26° (2020)
Sun, 0149° / 36°0.12
49 °
Derby, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation40%
Record high69° (2024)
Record low25° (1972)
Mon, 0247° / 36°0.19
47 °
Derby, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.19 in
Chance of precipitation40%
Record high60° (2001)
Record low20° (2002)
Tue, 0347° / 36°0.24
47 °
Derby, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.24 in
Chance of precipitation48%
Record high61° (1975)
Record low21° (2002)
Wed, 0447° / 35°0.09
47 °
Derby, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.09 in
Chance of precipitation35%
Record high66° (1990)
Record low23° (2002)
Thu, 0547° / 35°0.14
47 °
Derby, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.14 in
Chance of precipitation35%
Record high68° (2022)
Record low22° (1965)
Fri, 0646° / 35°0.16
46 °
Derby, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.16 in
Chance of precipitation42%
Record high70° (2022)
Record low26° (1973)
Sat, 0746° / 34°0.08
46 °
Derby, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.08 in
Chance of precipitation32%
Record high66° (2022)
Record low14° (2002)
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 Derby, 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 Derby, 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.