Monthly outlook for Katama, MA: average high 57.3°, average low 51.9°. That is 0.2° below the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 16 October (70.6°), the coolest 18 October (42°).
57.3°/51.9°
Average high / low
−0.2°
Below normal
3 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
58.3°
58.6°
-0.2°
26 October – 4 November
55.7°
56°
-0.2°
5 November – 14 November
at normal
53.3°
—
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).
Sat, 1765° / 45°0.11
65 °
Katama, Saturday, 17 October
Rain. High 65°, low 45°.
Pressure30.03 inHg
Wind15.1 mph N
Humidity64%
Visibility6.2 mi
Dew point38°
Sun, 1851° / 42°0
51 °
Katama, Sunday, 18 October
Clear. High 51°, low 42°.
Pressure30.59 inHg
Wind7.8 mph NE
Humidity50%
Visibility6.2 mi
Dew point32°
Mon, 1955° / 46°0
55 °
Katama, Monday, 19 October
Overcast. High 55°, low 46°.
Pressure30.50 inHg
Wind13 mph NE
Humidity71%
Visibility6.2 mi
Dew point45°
Tue, 2059° / 54°0
59 °
Katama, Tuesday, 20 October
Light rain. High 59°, low 54°.
Pressure30.18 inHg
Wind21 mph NE
Humidity82%
Visibility—
Dew point53°
Wed, 2157° / 55°0.03
57 °
Katama, Wednesday, 21 October
Light rain. High 57°, low 55°.
Pressure30.21 inHg
Wind27.3 mph NE
Humidity76%
Visibility—
Dew point49°
Thu, 2256° / 54°0
56 °
Katama, Thursday, 22 October
Light rain. High 56°, low 54°.
Pressure30.42 inHg
Wind25.8 mph NE
Humidity70%
Visibility—
Dew point46°
Fri, 2357° / 54°0
57 °
Katama, Friday, 23 October
Clear. High 57°, low 54°.
Pressure30.30 inHg
Wind16.5 mph NE
Humidity68%
Visibility—
Dew point45°
Sat, 2458° / 53°0
58 °
Katama, Saturday, 24 October
Clear. High 58°, low 53°.
Pressure30.39 inHg
Wind21 mph NE
Humidity74%
Visibility—
Dew point49°
Sun, 2555° / 53°0.01
55 °
Katama, Sunday, 25 October
Light rain. High 55°, low 53°.
Pressure30.50 inHg
Wind20.3 mph E
Humidity68%
Visibility—
Dew point44°
Mon, 2657° / 53°0
57 °
Katama, Monday, 26 October
Overcast. High 57°, low 53°.
Pressure30.30 inHg
Wind19.2 mph NE
Humidity70%
Visibility—
Dew point45°
Tue, 2757° / 54°0
57 °
Katama, Tuesday, 27 October
Overcast. High 57°, low 54°.
Pressure29.97 inHg
Wind26.6 mph N
Humidity75%
Visibility—
Dew point47°
Wed, 2856° / 53°0
56 °
Katama, Wednesday, 28 October
Clear. High 56°, low 53°.
Pressure30.06 inHg
Wind16 mph N
Humidity69%
Visibility—
Dew point45°
Thu, 2954° / 53°0
54 °
Katama, Thursday, 29 October
Overcast. High 54°, low 53°.
Pressure30.15 inHg
Wind19.3 mph E
Humidity71%
Visibility—
Dew point44°
Fri, 3055° / 54°0.13
55 °
Katama, Friday, 30 October
Light rain. High 55°, low 54°.
Pressure29.94 inHg
Wind26.7 mph E
Humidity83%
Visibility—
Dew point50°
Sat, 3155° / 53°0.02
55 °
Katama, Saturday, 31 October
Light rain. High 55°, low 53°.
Pressure29.94 inHg
Wind19.1 mph NE
Humidity70%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1153° / 46°0.13
53 °
Katama, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low46°
Average precipitation0.13 in
Chance of precipitation40%
Record high68° (2022)
Record low27° (2017)
Thu, 1252° / 44°0.18
52 °
Katama, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.18 in
Chance of precipitation35%
Record high69° (2022)
Record low30° (2017)
Fri, 1351° / 43°0.23
51 °
Katama, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.23 in
Chance of precipitation45%
Record high62° (1975)
Record low23° (2019)
Sat, 1451° / 44°0.12
51 °
Katama, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.12 in
Chance of precipitation25%
Record high60° (2009)
Record low25° (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.