Monthly outlook for Barnstable, MA: average high 62.7°, average low 51.5°. That is 1.7° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 13 October (68.8°), the coolest 18 October (42.7°).
62.7°/51.5°
Average high / low
+1.7°
Above normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
63.4°
60.5°
+1.6°
18 October – 27 October
61.4°
57.6°
+2.1°
28 October – 6 November
at normal
55.1°
—
October records over 66 years
78.8°5 October 2025All-time high
33.3°24 October 1969All-time low
Fri, 0968° / 47°0
68 °
Barnstable, Friday, 9 October
Clear. High 68°, low 47°.
Pressure30.06 inHg
Wind11.2 mph W
Humidity48%
Visibility6.2 mi
Dew point45°
Sat, 1061° / 51°0
61 °
Barnstable, Saturday, 10 October
Overcast. High 61°, low 51°.
Pressure30.45 inHg
Wind8.2 mph N
Humidity49%
Visibility6.2 mi
Dew point40°
Sun, 1161° / 51°0.04
61 °
Barnstable, Sunday, 11 October
Light rain. High 61°, low 51°.
Pressure30.42 inHg
Wind8.6 mph S
Humidity60%
Visibility6.2 mi
Dew point48°
Mon, 1266° / 57°0.32
66 °
Barnstable, Monday, 12 October
Rain. High 66°, low 57°.
Pressure29.74 inHg
Wind7.9 mph NE
Humidity90%
Visibility6.2 mi
Dew point61°
Tue, 1369° / 54°0.01
69 °
Barnstable, Tuesday, 13 October
Light rain. High 69°, low 54°.
Pressure29.68 inHg
Wind12 mph SW
Humidity78%
Visibility—
Dew point58°
Wed, 1458° / 50°0
58 °
Barnstable, Wednesday, 14 October
Clear. High 58°, low 50°.
Pressure29.94 inHg
Wind15.2 mph NW
Humidity55%
Visibility—
Dew point37°
Thu, 1556° / 50°0
56 °
Barnstable, Thursday, 15 October
Partly cloudy. High 56°, low 50°.
Pressure30.30 inHg
Wind9.6 mph N
Humidity56%
Visibility—
Dew point39°
Fri, 1664° / 50°0.01
64 °
Barnstable, Friday, 16 October
Light rain. High 64°, low 50°.
Pressure30.24 inHg
Wind25.7 mph SW
Humidity74%
Visibility—
Dew point49°
Sat, 1762° / 46°0.05
62 °
Barnstable, Saturday, 17 October
Light rain. High 62°, low 46°.
Pressure30.00 inHg
Wind25.9 mph N
Humidity53%
Visibility—
Dew point37°
Sun, 1849° / 43°0
49 °
Barnstable, Sunday, 18 October
Clear. High 49°, low 43°.
Pressure30.47 inHg
Wind20.3 mph N
Humidity50%
Visibility—
Dew point29°
Mon, 1961° / 48°0
61 °
Barnstable, Monday, 19 October
Overcast. High 61°, low 48°.
Pressure30.45 inHg
Wind14.3 mph SW
Humidity48%
Visibility—
Dew point37°
Tue, 2063° / 53°0
63 °
Barnstable, Tuesday, 20 October
Overcast. High 63°, low 53°.
Pressure30.30 inHg
Wind10.7 mph SW
Humidity54%
Visibility—
Dew point41°
Wed, 2165° / 57°0.02
65 °
Barnstable, Wednesday, 21 October
Light rain. High 65°, low 57°.
Pressure30.21 inHg
Wind11.7 mph SW
Humidity69%
Visibility—
Dew point53°
Thu, 2265° / 57°0.52
65 °
Barnstable, Thursday, 22 October
Rain. High 65°, low 57°.
Pressure30.12 inHg
Wind8.5 mph SW
Humidity82%
Visibility—
Dew point57°
Fri, 2366° / 56°0.04
66 °
Barnstable, Friday, 23 October
Light rain. High 66°, low 56°.
Pressure30.03 inHg
Wind18.1 mph S
Humidity78%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2457° / 49°0.08
57 °
Barnstable, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high57°
Average low49°
Average precipitation0.08 in
Chance of precipitation33%
Record high70° (2017)
Record low33° (1969)
Sun, 2558° / 50°0.17
58 °
Barnstable, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low50°
Average precipitation0.17 in
Chance of precipitation30%
Record high70° (2021)
Record low39° (2018)
Mon, 2656° / 49°0.14
56 °
Barnstable, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.14 in
Chance of precipitation27%
Record high74° (2023)
Record low33° (2018)
Tue, 2756° / 48°0.13
56 °
Barnstable, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low48°
Average precipitation0.13 in
Chance of precipitation28%
Record high71° (2023)
Record low35° (1962)
Wed, 2857° / 48°0.15
57 °
Barnstable, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low48°
Average precipitation0.15 in
Chance of precipitation37%
Record high75° (2023)
Record low35° (1976)
Thu, 2955° / 47°0.11
55 °
Barnstable, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.11 in
Chance of precipitation23%
Record high66° (2003)
Record low36° (1965)
Fri, 3054° / 46°0.15
54 °
Barnstable, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.15 in
Chance of precipitation30%
Record high66° (2017)
Record low36° (1966)
Sat, 3155° / 47°0.09
55 °
Barnstable, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.09 in
Chance of precipitation20%
Record high70° (2024)
Record low36° (2020)
Sun, 0156° / 48°0.11
56 °
Barnstable, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high56°
Average low48°
Average precipitation0.11 in
Chance of precipitation30%
Record high69° (2024)
Record low38° (1976)
Mon, 0256° / 47°0.13
56 °
Barnstable, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.13 in
Chance of precipitation27%
Record high65° (1971)
Record low32° (2002)
Tue, 0355° / 46°0.21
55 °
Barnstable, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.21 in
Chance of precipitation35%
Record high68° (2017)
Record low35° (2002)
Wed, 0455° / 46°0.04
55 °
Barnstable, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.04 in
Chance of precipitation20%
Record high67° (2022)
Record low35° (2002)
Thu, 0555° / 47°0.16
55 °
Barnstable, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.16 in
Chance of precipitation35%
Record high71° (2022)
Record low34° (1965)
Fri, 0654° / 46°0.15
54 °
Barnstable, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.15 in
Chance of precipitation35%
Record high72° (2022)
Record low35° (1987)
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 Barnstable, MA 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 Barnstable, MA 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.