Monthly outlook for Katama, MA: average high 60°, average low 52.1°. That is 0.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 14 October (71.7°), the coolest 18 October (41.6°).
60°/52.1°
Average high / low
+0.6°
Above normal
4 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
61°
59.6°
+0.8°
22 October – 31 October
58.3°
56.8°
+0.8°
1 November – 10 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).
Tue, 1363° / 55°0
63 °
Katama, Tuesday, 13 October
Overcast. High 63°, low 55°.
Pressure30.03 inHg
Wind10.3 mph E
Humidity78%
Visibility6.2 mi
Dew point54°
Wed, 1472° / 63°0
72 °
Katama, Wednesday, 14 October
Light rain. High 72°, low 63°.
Pressure29.83 inHg
Wind12.3 mph SW
Humidity80%
Visibility6.2 mi
Dew point64°
Thu, 1562° / 52°0
62 °
Katama, Thursday, 15 October
Mostly clear. High 62°, low 52°.
Pressure30.15 inHg
Wind10.2 mph N
Humidity59%
Visibility6.2 mi
Dew point44°
Fri, 1664° / 53°0.55
64 °
Katama, Friday, 16 October
Rain. High 64°, low 53°.
Pressure29.68 inHg
Wind14.2 mph SE
Humidity94%
Visibility3.5 mi
Dew point56°
Sat, 1753° / 45°0.01
53 °
Katama, Saturday, 17 October
Light rain. High 53°, low 45°.
Pressure29.94 inHg
Wind24.9 mph NW
Humidity56%
Visibility—
Dew point34°
Sun, 1854° / 42°0
54 °
Katama, Sunday, 18 October
Clear. High 54°, low 42°.
Pressure30.50 inHg
Wind19.3 mph NW
Humidity44%
Visibility—
Dew point24°
Mon, 1960° / 55°0
60 °
Katama, Monday, 19 October
Clear. High 60°, low 55°.
Pressure30.53 inHg
Wind24.7 mph SW
Humidity65%
Visibility—
Dew point46°
Tue, 2061° / 59°0
61 °
Katama, Tuesday, 20 October
Overcast. High 61°, low 59°.
Pressure30.30 inHg
Wind22.6 mph SW
Humidity86%
Visibility—
Dew point56°
Wed, 2158° / 53°0
58 °
Katama, Wednesday, 21 October
Clear. High 58°, low 53°.
Pressure30.30 inHg
Wind16.8 mph NE
Humidity62%
Visibility—
Dew point45°
Thu, 2251° / 49°0
51 °
Katama, Thursday, 22 October
Clear. High 51°, low 49°.
Pressure30.62 inHg
Wind16 mph NE
Humidity60%
Visibility—
Dew point37°
Fri, 2360° / 50°0.06
60 °
Katama, Friday, 23 October
Light rain. High 60°, low 50°.
Pressure30.45 inHg
Wind27.4 mph W
Humidity66%
Visibility—
Dew point42°
Sat, 2459° / 52°0
59 °
Katama, Saturday, 24 October
Clear. High 59°, low 52°.
Pressure30.15 inHg
Wind23.7 mph W
Humidity67%
Visibility—
Dew point45°
Sun, 2558° / 52°0.01
58 °
Katama, Sunday, 25 October
Light rain. High 58°, low 52°.
Pressure30.18 inHg
Wind20.4 mph S
Humidity63%
Visibility—
Dew point41°
Mon, 2662° / 53°0.12
62 °
Katama, Monday, 26 October
Light rain. High 62°, low 53°.
Pressure29.56 inHg
Wind24.6 mph W
Humidity94%
Visibility—
Dew point59°
Tue, 2760° / 49°0
60 °
Katama, Tuesday, 27 October
Partly cloudy. High 60°, low 49°.
Pressure29.44 inHg
Wind30 mph W
Humidity60%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1054° / 46°0.21
54 °
Katama, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.21 in
Chance of precipitation43%
Record high64° (2020)
Record low29° (2017)
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.