Monthly outlook for Marlborough, NH: average high 54.6°, average low 34.8°. That is 0.6° below the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 20 October (66.1°), the coolest 25 October (28.3°).
54.6°/34.8°
Average high / low
−0.6°
Below normal
1 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
56.3°
57.1°
-0.5°
25 October – 3 November
51.9°
53.4°
-0.8°
4 November – 13 November
at normal
49°
—
October records over 66 years
83.5°5 October 2007All-time high
21°31 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Peterborough (12 mi).
Fri, 1665° / 44°0.65
65 °
Marlborough, Friday, 16 October
Heavy rain. High 65°, low 44°.
Pressure29.77 inHg
Wind10 mph S
Humidity95%
Visibility4.2 mi
Dew point54°
Sat, 1754° / 33°0
54 °
Marlborough, Saturday, 17 October
Light rain. High 54°, low 33°.
Pressure30.09 inHg
Wind14.2 mph NW
Humidity56%
Visibility6.2 mi
Dew point24°
Sun, 1851° / 28°0
51 °
Marlborough, Sunday, 18 October
Mostly clear. High 51°, low 28°.
Pressure30.53 inHg
Wind3.6 mph SW
Humidity51%
Visibility6.2 mi
Dew point22°
Mon, 1963° / 36°0
63 °
Marlborough, Monday, 19 October
Clear. High 63°, low 36°.
Pressure30.50 inHg
Wind4.8 mph SW
Humidity49%
Visibility6.2 mi
Dew point38°
Tue, 2066° / 40°0
66 °
Marlborough, Tuesday, 20 October
Overcast. High 66°, low 40°.
Pressure30.36 inHg
Wind6.3 mph N
Humidity62%
Visibility—
Dew point40°
Wed, 2157° / 38°0
57 °
Marlborough, Wednesday, 21 October
Overcast. High 57°, low 38°.
Pressure30.36 inHg
Wind7.7 mph N
Humidity57%
Visibility—
Dew point37°
Thu, 2254° / 35°0
54 °
Marlborough, Thursday, 22 October
Overcast. High 54°, low 35°.
Pressure30.42 inHg
Wind5 mph SW
Humidity65%
Visibility—
Dew point36°
Fri, 2346° / 34°0.04
46 °
Marlborough, Friday, 23 October
Light rain. High 46°, low 34°.
Pressure30.39 inHg
Wind12.8 mph N
Humidity56%
Visibility—
Dew point31°
Sat, 2447° / 30°0
47 °
Marlborough, Saturday, 24 October
Clear. High 47°, low 30°.
Pressure30.68 inHg
Wind10.5 mph NE
Humidity43%
Visibility—
Dew point20°
Sun, 2551° / 28°0
51 °
Marlborough, Sunday, 25 October
Clear. High 51°, low 28°.
Pressure30.56 inHg
Wind8.5 mph NE
Humidity36%
Visibility—
Dew point17°
Mon, 2656° / 32°0
56 °
Marlborough, Monday, 26 October
Clear. High 56°, low 32°.
Pressure30.33 inHg
Wind13.5 mph N
Humidity42%
Visibility—
Dew point26°
Tue, 2752° / 31°0
52 °
Marlborough, Tuesday, 27 October
Overcast. High 52°, low 31°.
Pressure30.36 inHg
Wind10.3 mph SW
Humidity47%
Visibility—
Dew point26°
Wed, 2855° / 33°0
55 °
Marlborough, Wednesday, 28 October
Overcast. High 55°, low 33°.
Pressure30.06 inHg
Wind15.4 mph NW
Humidity53%
Visibility—
Dew point31°
Thu, 2947° / 31°0.02
47 °
Marlborough, Thursday, 29 October
Light rain. High 47°, low 31°.
Pressure30.36 inHg
Wind6.1 mph SW
Humidity41%
Visibility—
Dew point19°
Fri, 3050° / 38°0.04
50 °
Marlborough, Friday, 30 October
Light rain. High 50°, low 38°.
Pressure30.18 inHg
Wind2.9 mph E
Humidity89%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3153° / 38°0.08
53 °
Marlborough, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation27%
Record high74° (2024)
Record low21° (2011)
Sun, 0154° / 39°0.11
54 °
Marlborough, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.11 in
Chance of precipitation30%
Record high72° (1974)
Record low29° (2011)
Mon, 0253° / 39°0.1
53 °
Marlborough, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.1 in
Chance of precipitation32%
Record high72° (1982)
Record low24° (1965)
Tue, 0353° / 38°0.17
53 °
Marlborough, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.17 in
Chance of precipitation37%
Record high69° (1990)
Record low22° (2002)
Wed, 0452° / 38°0.08
52 °
Marlborough, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.08 in
Chance of precipitation25%
Record high71° (1987)
Record low26° (2013)
Thu, 0552° / 38°0.17
52 °
Marlborough, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.17 in
Chance of precipitation38%
Record high71° (1994)
Record low26° (1965)
Fri, 0650° / 38°0.14
50 °
Marlborough, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.14 in
Chance of precipitation35%
Record high73° (2024)
Record low26° (2012)
Sat, 0750° / 36°0.06
50 °
Marlborough, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.06 in
Chance of precipitation28%
Record high69° (2020)
Record low21° (2002)
Sun, 0849° / 36°0.1
49 °
Marlborough, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation32%
Record high70° (2020)
Record low20° (2002)
Mon, 0949° / 36°0.11
49 °
Marlborough, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation28%
Record high70° (2020)
Record low20° (1971)
Tue, 1049° / 36°0.14
49 °
Marlborough, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.14 in
Chance of precipitation37%
Record high69° (2020)
Record low20° (2017)
Wed, 1148° / 35°0.13
48 °
Marlborough, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.13 in
Chance of precipitation35%
Record high70° (2020)
Record low17° (2017)
Thu, 1247° / 34°0.15
47 °
Marlborough, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.15 in
Chance of precipitation37%
Record high68° (2022)
Record low19° (1976)
Fri, 1345° / 32°0.15
45 °
Marlborough, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.15 in
Chance of precipitation38%
Record high65° (1964)
Record low11° (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 Marlborough, NH 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 Marlborough, NH 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.