Monthly outlook for Amagansett, NY: average high 78.4°, average low 69.4°. That is 2.3° above the climate normal for August. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 9 August (90.5°), the coolest 22 August (65.4°).
78.4°/69.4°
Average high / low
+2.3°
Above normal
4 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79.5°
74.7°
+2.7°
19 August – 28 August
76.4°
73.5°
+1.6°
29 August – 7 September
at normal
72.3°
—
August records over 66 years
88°30 August 2018All-time high
52.3°29 August 1982All-time low
Mon, 1087° / 71°0
87 °
Amagansett, Monday, 10 August
Clear. High 87°, low 71°.
Pressure29.97 inHg
Wind1.9 mph SW
Humidity51%
Visibility6.2 mi
Dew point60°
Tue, 1183° / 75°0
83 °
Amagansett, Tuesday, 11 August
Overcast. High 83°, low 75°.
Pressure29.85 inHg
Wind7.3 mph W
Humidity66%
Visibility6.2 mi
Dew point66°
Wed, 1276° / 70°0.19
76 °
Amagansett, Wednesday, 12 August
Light rain. High 76°, low 70°.
Pressure29.71 inHg
Wind9 mph NW
Humidity76%
Visibility6.2 mi
Dew point67°
Thu, 1380° / 69°0.13
80 °
Amagansett, Thursday, 13 August
Light rain. High 80°, low 69°.
Pressure29.71 inHg
Wind18.9 mph NW
Humidity80%
Visibility—
Dew point67°
Fri, 1475° / 66°0
75 °
Amagansett, Friday, 14 August
Clear. High 75°, low 66°.
Pressure30.00 inHg
Wind16.2 mph NW
Humidity50%
Visibility—
Dew point49°
Sat, 1577° / 67°0
77 °
Amagansett, Saturday, 15 August
Clear. High 77°, low 67°.
Pressure30.06 inHg
Wind18.3 mph NW
Humidity52%
Visibility—
Dew point52°
Sun, 1676° / 67°0
76 °
Amagansett, Sunday, 16 August
Clear. High 76°, low 67°.
Pressure30.18 inHg
Wind12.2 mph N
Humidity48%
Visibility—
Dew point50°
Mon, 1775° / 70°0
75 °
Amagansett, Monday, 17 August
Overcast. High 75°, low 70°.
Pressure30.18 inHg
Wind14.2 mph S
Humidity56%
Visibility—
Dew point58°
Tue, 1875° / 70°0
75 °
Amagansett, Tuesday, 18 August
Overcast. High 75°, low 70°.
Pressure30.12 inHg
Wind10.2 mph S
Humidity53%
Visibility—
Dew point56°
Wed, 1976° / 68°0
76 °
Amagansett, Wednesday, 19 August
Overcast. High 76°, low 68°.
Pressure30.00 inHg
Wind12.4 mph S
Humidity69%
Visibility—
Dew point63°
Thu, 2077° / 69°0.83
77 °
Amagansett, Thursday, 20 August
Heavy rain. High 77°, low 69°.
Pressure29.65 inHg
Wind20.5 mph S
Humidity90%
Visibility—
Dew point67°
Fri, 2175° / 67°0
75 °
Amagansett, Friday, 21 August
Overcast. High 75°, low 67°.
Pressure29.74 inHg
Wind22.2 mph NW
Humidity64%
Visibility—
Dew point55°
Sat, 2274° / 65°0
74 °
Amagansett, Saturday, 22 August
Clear. High 74°, low 65°.
Pressure30.03 inHg
Wind14.2 mph NW
Humidity46%
Visibility—
Dew point47°
Sun, 2376° / 69°0
76 °
Amagansett, Sunday, 23 August
Partly cloudy. High 76°, low 69°.
Pressure30.09 inHg
Wind22 mph S
Humidity61%
Visibility—
Dew point61°
Mon, 2481° / 74°0.11
81 °
Amagansett, Monday, 24 August
Light rain. High 81°, low 74°.
Pressure29.85 inHg
Wind23.1 mph SW
Humidity78%
Visibility—
Dew point70°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 67°0.1
73 °
Amagansett, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.1 in
Chance of precipitation27%
Record high87° (2020)
Record low57° (1963)
Wed, 2673° / 67°0.06
73 °
Amagansett, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.06 in
Chance of precipitation15%
Record high86° (2022)
Record low59° (1963)
Thu, 2774° / 68°0.09
74 °
Amagansett, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high74°
Average low68°
Average precipitation0.09 in
Chance of precipitation27%
Record high85° (2021)
Record low59° (1969)
Fri, 2873° / 68°0.17
73 °
Amagansett, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low68°
Average precipitation0.17 in
Chance of precipitation28%
Record high87° (2024)
Record low57° (1986)
Sat, 2973° / 67°0.16
73 °
Amagansett, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.16 in
Chance of precipitation35%
Record high87° (2018)
Record low52° (1982)
Sun, 3073° / 67°0.09
73 °
Amagansett, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.09 in
Chance of precipitation23%
Record high88° (2018)
Record low55° (1965)
Mon, 3173° / 67°0.06
73 °
Amagansett, Monday, 31 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.06 in
Chance of precipitation18%
Record high83° (2022)
Record low56° (1976)
Tue, 0172° / 66°0.07
72 °
Amagansett, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.07 in
Chance of precipitation23%
Record high81° (2022)
Record low56° (2017)
Wed, 0272° / 66°0.21
72 °
Amagansett, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.21 in
Chance of precipitation23%
Record high80° (1966)
Record low57° (1967)
Thu, 0372° / 66°0.1
72 °
Amagansett, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.1 in
Chance of precipitation27%
Record high81° (2018)
Record low58° (2017)
Fri, 0473° / 66°0.14
73 °
Amagansett, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high87° (2018)
Record low56° (1997)
Sat, 0572° / 65°0.04
72 °
Amagansett, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high72°
Average low65°
Average precipitation0.04 in
Chance of precipitation17%
Record high87° (2023)
Record low56° (2000)
Sun, 0671° / 65°0.12
71 °
Amagansett, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high71°
Average low65°
Average precipitation0.12 in
Chance of precipitation37%
Record high88° (2023)
Record low56° (1962)
Mon, 0771° / 65°0.1
71 °
Amagansett, Monday, 7 September
Climate normal for this date — 60-year average.
Average high71°
Average low65°
Average precipitation0.1 in
Chance of precipitation25%
Record high89° (2023)
Record low57° (1962)
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 Amagansett, NY 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 Amagansett, NY 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.