Monthly outlook for Derby, ME: average high 53.1°, average low 38.4°. That is 0.3° below the climate normal for October. Precipitation is expected on 5 days (about 3.0 inches), against a normal of 5 days and 2.4 inches. The warmest day looks like 12 October (68.7°), the coolest 20 October (30.2°).
53.1°/38.4°
Average high / low
−0.3°
Below normal
5 / 5
Wet days / normal
3.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
53.6°
54.7°
-0.6°
20 October – 29 October
52.3°
51°
+0.7°
30 October – 8 November
at normal
46.9°
—
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).
Sun, 1161° / 38°0
61 °
Derby, Sunday, 11 October
Overcast. High 61°, low 38°.
Pressure30.33 inHg
Wind9.2 mph SW
Humidity45%
Visibility6.2 mi
Dew point35°
Mon, 1269° / 46°0
69 °
Derby, Monday, 12 October
Light rain. High 69°, low 46°.
Pressure29.74 inHg
Wind9.3 mph NW
Humidity51%
Visibility6.2 mi
Dew point50°
Tue, 1348° / 42°1.3
48 °
Derby, Tuesday, 13 October
Heavy rain. High 48°, low 42°.
Pressure30.03 inHg
Wind7.5 mph E
Humidity97%
Visibility2.4 mi
Dew point42°
Wed, 1456° / 47°0.71
56 °
Derby, Wednesday, 14 October
Heavy rain. High 56°, low 47°.
Pressure29.65 inHg
Wind10.2 mph NW
Humidity76%
Visibility—
Dew point48°
Thu, 1551° / 40°0
51 °
Derby, Thursday, 15 October
Overcast. High 51°, low 40°.
Pressure29.97 inHg
Wind19.7 mph NW
Humidity49%
Visibility—
Dew point31°
Fri, 1645° / 32°0.3
45 °
Derby, Friday, 16 October
Rain. High 45°, low 32°.
Pressure30.12 inHg
Wind9.5 mph SE
Humidity46%
Visibility—
Dew point24°
Sat, 1759° / 41°0.3
59 °
Derby, Saturday, 17 October
Rain. High 59°, low 41°.
Pressure29.59 inHg
Wind11.4 mph W
Humidity68%
Visibility—
Dew point46°
Sun, 1846° / 34°0
46 °
Derby, Sunday, 18 October
Overcast. High 46°, low 34°.
Pressure29.91 inHg
Wind10.1 mph NW
Humidity59%
Visibility—
Dew point30°
Mon, 1948° / 32°0
48 °
Derby, Monday, 19 October
Clear. High 48°, low 32°.
Pressure30.27 inHg
Wind10.5 mph NW
Humidity53%
Visibility—
Dew point26°
Tue, 2055° / 30°0
55 °
Derby, Tuesday, 20 October
Clear. High 55°, low 30°.
Pressure30.53 inHg
Wind4.1 mph W
Humidity45%
Visibility—
Dew point26°
Wed, 2154° / 34°0
54 °
Derby, Wednesday, 21 October
Partly cloudy. High 54°, low 34°.
Pressure30.59 inHg
Wind3.5 mph S
Humidity56%
Visibility—
Dew point33°
Thu, 2253° / 36°0
53 °
Derby, Thursday, 22 October
Overcast. High 53°, low 36°.
Pressure30.33 inHg
Wind8.4 mph S
Humidity73%
Visibility—
Dew point38°
Fri, 2356° / 45°0.39
56 °
Derby, Friday, 23 October
Rain. High 56°, low 45°.
Pressure29.97 inHg
Wind7.5 mph S
Humidity90%
Visibility—
Dew point49°
Sat, 2450° / 40°0.02
50 °
Derby, Saturday, 24 October
Light rain. High 50°, low 40°.
Pressure29.80 inHg
Wind10.7 mph W
Humidity72%
Visibility—
Dew point39°
Sun, 2545° / 36°0
45 °
Derby, Sunday, 25 October
Overcast. High 45°, low 36°.
Pressure29.97 inHg
Wind10.6 mph W
Humidity65%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 0844° / 33°0.11
44 °
Derby, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.11 in
Chance of precipitation23%
Record high59° (1975)
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.