Monthly outlook for Katama, MA: average high 60.3°, average low 52.5°. That is 0.7° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 14 October (72.8°), the coolest 18 October (38.8°).
60.3°/52.5°
Average high / low
+0.7°
Above normal
4 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
60.7°
59.8°
+0.5°
21 October – 30 October
59.8°
57.2°
+1.4°
31 October – 9 November
at normal
55°
—
October records over 66 years
76.3°5 October 2025All-time high
34.5°24 October 1969All-time low
Climate normals and records are computed from the nearest reference point — Edgartown (2 mi).
Mon, 1264° / 51°0.1
64 °
Katama, Monday, 12 October
Light rain. High 64°, low 51°.
Pressure29.71 inHg
Wind14.1 mph NE
Humidity82%
Visibility6.2 mi
Dew point56°
Tue, 1366° / 50°0
66 °
Katama, Tuesday, 13 October
Overcast. High 66°, low 50°.
Pressure30.00 inHg
Wind10.2 mph E
Humidity80%
Visibility6.2 mi
Dew point56°
Wed, 1473° / 59°0.01
73 °
Katama, Wednesday, 14 October
Light rain. High 73°, low 59°.
Pressure29.80 inHg
Wind3.3 mph NW
Humidity77%
Visibility6.2 mi
Dew point65°
Thu, 1561° / 52°0
61 °
Katama, Thursday, 15 October
Overcast. High 61°, low 52°.
Pressure30.15 inHg
Wind9.1 mph N
Humidity60%
Visibility6.2 mi
Dew point45°
Fri, 1665° / 51°0.56
65 °
Katama, Friday, 16 October
Rain. High 65°, low 51°.
Pressure29.77 inHg
Wind27 mph NW
Humidity85%
Visibility—
Dew point53°
Sat, 1751° / 44°0.16
51 °
Katama, Saturday, 17 October
Light rain. High 51°, low 44°.
Pressure29.85 inHg
Wind28.7 mph N
Humidity67%
Visibility—
Dew point38°
Sun, 1848° / 39°0
48 °
Katama, Sunday, 18 October
Partly cloudy. High 48°, low 39°.
Pressure30.42 inHg
Wind29 mph NW
Humidity54%
Visibility—
Dew point26°
Mon, 1959° / 50°0
59 °
Katama, Monday, 19 October
Clear. High 59°, low 50°.
Pressure30.53 inHg
Wind29.1 mph SW
Humidity59%
Visibility—
Dew point40°
Tue, 2060° / 54°0
60 °
Katama, Tuesday, 20 October
Mostly clear. High 60°, low 54°.
Pressure30.39 inHg
Wind18 mph W
Humidity57%
Visibility—
Dew point41°
Wed, 2156° / 52°0
56 °
Katama, Wednesday, 21 October
Overcast. High 56°, low 52°.
Pressure30.68 inHg
Wind18.2 mph NE
Humidity67%
Visibility—
Dew point44°
Thu, 2258° / 54°0
58 °
Katama, Thursday, 22 October
Overcast. High 58°, low 54°.
Pressure30.68 inHg
Wind13.6 mph E
Humidity71%
Visibility—
Dew point46°
Fri, 2360° / 56°0
60 °
Katama, Friday, 23 October
Partly cloudy. High 60°, low 56°.
Pressure30.47 inHg
Wind9.1 mph SW
Humidity82%
Visibility—
Dew point52°
Sat, 2461° / 59°0
61 °
Katama, Saturday, 24 October
Overcast. High 61°, low 59°.
Pressure30.24 inHg
Wind14 mph SW
Humidity85%
Visibility—
Dew point56°
Sun, 2562° / 62°0
62 °
Katama, Sunday, 25 October
Overcast. High 62°, low 62°.
Pressure29.94 inHg
Wind19.1 mph SW
Humidity92%
Visibility—
Dew point60°
Mon, 2661° / 56°0
61 °
Katama, Monday, 26 October
Light rain. High 61°, low 56°.
Pressure29.85 inHg
Wind16.8 mph W
Humidity77%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 50°0.15
56 °
Katama, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low50°
Average precipitation0.15 in
Chance of precipitation30%
Record high69° (2023)
Record low36° (1976)
Wed, 2857° / 49°0.18
57 °
Katama, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low49°
Average precipitation0.18 in
Chance of precipitation43%
Record high72° (2023)
Record low36° (1976)
Thu, 2956° / 49°0.13
56 °
Katama, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.13 in
Chance of precipitation23%
Record high67° (2003)
Record low36° (1965)
Fri, 3055° / 48°0.17
55 °
Katama, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.17 in
Chance of precipitation27%
Record high66° (2017)
Record low37° (1966)
Sat, 3155° / 49°0.11
55 °
Katama, 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 low37° (2018)
Sun, 0157° / 50°0.14
57 °
Katama, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low50°
Average precipitation0.14 in
Chance of precipitation33%
Record high69° (2019)
Record low39° (2010)
Mon, 0256° / 49°0.14
56 °
Katama, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.14 in
Chance of precipitation30%
Record high66° (2017)
Record low33° (1965)
Tue, 0356° / 48°0.22
56 °
Katama, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low48°
Average precipitation0.22 in
Chance of precipitation37%
Record high66° (2017)
Record low37° (2002)
Wed, 0455° / 48°0.05
55 °
Katama, 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°0.17
55 °
Katama, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.17 in
Chance of precipitation38%
Record high69° (2022)
Record low35° (1965)
Fri, 0655° / 48°0.15
55 °
Katama, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low48°
Average precipitation0.15 in
Chance of precipitation43%
Record high70° (2022)
Record low37° (2012)
Sat, 0755° / 47°0.08
55 °
Katama, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (2024)
Record low35° (1962)
Sun, 0854° / 45°0.15
54 °
Katama, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.15 in
Chance of precipitation28%
Record high68° (2020)
Record low32° (2019)
Mon, 0953° / 46°0.11
53 °
Katama, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low46°
Average precipitation0.11 in
Chance of precipitation30%
Record high65° (2020)
Record low30° (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 Katama, 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 Katama, 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.