Monthly outlook for Chilmark, MA: average high 62°, average low 53.3°. That is 1° above the climate normal for October. Precipitation is expected on 5 days (about 2.3 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 8 October (70.9°), the coolest 7 October (36.5°).
62°/53.3°
Average high / low
+1°
Above normal
5 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
63.1°
61.1°
+1.1°
17 October – 26 October
60.1°
58.4°
+1°
27 October – 5 November
at normal
56°
—
October records over 66 years
76.5°5 October 2025All-time high
34.5°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — West Tisbury (5 mi).
Thu, 0871° / 52°0
71 °
Chilmark, Thursday, 8 October
Partly cloudy. High 71°, low 52°.
Pressure29.83 inHg
Wind19.5 mph SW
Humidity86%
Visibility6.2 mi
Dew point60°
Fri, 0968° / 47°0
68 °
Chilmark, Friday, 9 October
Clear. High 68°, low 47°.
Pressure30.09 inHg
Wind15.5 mph W
Humidity67%
Visibility6.2 mi
Dew point50°
Sat, 1061° / 55°0
61 °
Chilmark, Saturday, 10 October
Clear. High 61°, low 55°.
Pressure30.47 inHg
Wind5.7 mph NW
Humidity57%
Visibility6.2 mi
Dew point44°
Sun, 1163° / 55°0
63 °
Chilmark, Sunday, 11 October
Overcast. High 63°, low 55°.
Pressure30.45 inHg
Wind9.5 mph SW
Humidity74%
Visibility6.2 mi
Dew point53°
Mon, 1264° / 60°1.34
64 °
Chilmark, Monday, 12 October
Heavy rain. High 64°, low 60°.
Pressure29.83 inHg
Wind18.5 mph E
Humidity93%
Visibility—
Dew point61°
Tue, 1363° / 59°0.09
63 °
Chilmark, Tuesday, 13 October
Light rain. High 63°, low 59°.
Pressure29.56 inHg
Wind28 mph SW
Humidity88%
Visibility—
Dew point58°
Wed, 1458° / 48°0.04
58 °
Chilmark, Wednesday, 14 October
Light rain. High 58°, low 48°.
Pressure29.77 inHg
Wind29.4 mph NW
Humidity63%
Visibility—
Dew point38°
Thu, 1557° / 47°0
57 °
Chilmark, Thursday, 15 October
Mostly clear. High 57°, low 47°.
Pressure30.24 inHg
Wind13.9 mph N
Humidity48%
Visibility—
Dew point31°
Fri, 1662° / 58°0
62 °
Chilmark, Friday, 16 October
Overcast. High 62°, low 58°.
Pressure30.27 inHg
Wind23.8 mph SW
Humidity77%
Visibility—
Dew point54°
Sat, 1762° / 61°0
62 °
Chilmark, Saturday, 17 October
Clear. High 62°, low 61°.
Pressure30.21 inHg
Wind22.2 mph SW
Humidity88%
Visibility—
Dew point58°
Sun, 1864° / 61°0.01
64 °
Chilmark, Sunday, 18 October
Light rain. High 64°, low 61°.
Pressure30.24 inHg
Wind12 mph S
Humidity94%
Visibility—
Dew point60°
Mon, 1963° / 56°0.63
63 °
Chilmark, Monday, 19 October
Rain. High 63°, low 56°.
Pressure30.03 inHg
Wind23.3 mph N
Humidity97%
Visibility—
Dew point61°
Tue, 2059° / 55°0.01
59 °
Chilmark, Tuesday, 20 October
Light rain. High 59°, low 55°.
Pressure30.06 inHg
Wind20.8 mph N
Humidity69%
Visibility—
Dew point47°
Wed, 2159° / 53°0.17
59 °
Chilmark, Wednesday, 21 October
Light rain. High 59°, low 53°.
Pressure29.94 inHg
Wind18.5 mph N
Humidity80%
Visibility—
Dew point52°
Thu, 2254° / 48°0
54 °
Chilmark, Thursday, 22 October
Mostly clear. High 54°, low 48°.
Pressure30.18 inHg
Wind17.4 mph N
Humidity67%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2358° / 51°0.12
58 °
Chilmark, Friday, 23 October
Climate normal for this date — 60-year average.
Average high58°
Average low51°
Average precipitation0.12 in
Chance of precipitation25%
Record high69° (2024)
Record low35° (1969)
Sat, 2458° / 51°0.09
58 °
Chilmark, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high58°
Average low51°
Average precipitation0.09 in
Chance of precipitation37%
Record high71° (2017)
Record low35° (1969)
Sun, 2558° / 51°0.19
58 °
Chilmark, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low51°
Average precipitation0.19 in
Chance of precipitation32%
Record high70° (2021)
Record low42° (2018)
Mon, 2657° / 51°0.15
57 °
Chilmark, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low51°
Average precipitation0.15 in
Chance of precipitation30%
Record high71° (2023)
Record low36° (2018)
Tue, 2757° / 50°0.15
57 °
Chilmark, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low50°
Average precipitation0.15 in
Chance of precipitation30%
Record high69° (2023)
Record low35° (1976)
Wed, 2857° / 49°0.17
57 °
Chilmark, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low49°
Average precipitation0.17 in
Chance of precipitation40%
Record high73° (2023)
Record low36° (1976)
Thu, 2956° / 49°0.13
56 °
Chilmark, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.13 in
Chance of precipitation25%
Record high67° (2003)
Record low36° (1965)
Fri, 3055° / 48°0.17
55 °
Chilmark, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.17 in
Chance of precipitation30%
Record high67° (2017)
Record low37° (1966)
Sat, 3155° / 49°0.11
55 °
Chilmark, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low49°
Average precipitation0.11 in
Chance of precipitation20%
Record high69° (2024)
Record low36° (1966)
Sun, 0157° / 50°0.14
57 °
Chilmark, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low50°
Average precipitation0.14 in
Chance of precipitation32%
Record high69° (2019)
Record low39° (2010)
Mon, 0256° / 49°0.13
56 °
Chilmark, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.13 in
Chance of precipitation30%
Record high66° (2017)
Record low33° (1965)
Tue, 0356° / 48°0.22
56 °
Chilmark, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low48°
Average precipitation0.22 in
Chance of precipitation35%
Record high67° (2017)
Record low37° (2002)
Wed, 0455° / 48°0.05
55 °
Chilmark, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.05 in
Chance of precipitation23%
Record high66° (2022)
Record low35° (2020)
Thu, 0555° / 48°0.18
55 °
Chilmark, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.18 in
Chance of precipitation40%
Record high70° (2022)
Record low35° (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 Chilmark, 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 Chilmark, 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.