Monthly outlook for South Nyack, NY: average high 82.8°, average low 66.8°. That is 1.3° above the climate normal for August. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 11 August (91.5°), the coolest 22 August (59.4°).
82.8°/66.8°
Average high / low
+1.3°
Above normal
5 / 6
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84°
81.4°
+1.4°
19 August – 28 August
80.9°
79.6°
+0.7°
29 August – 7 September
at normal
78.2°
—
August records over 66 years
99.7°9 August 2001All-time high
50°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Eastchester (10 mi).
Mon, 1091° / 72°0
91 °
South Nyack, Monday, 10 August
Clear. High 91°, low 72°.
Pressure29.97 inHg
Wind6 mph W
Humidity36%
Visibility6.2 mi
Dew point59°
Tue, 1191° / 74°0
91 °
South Nyack, Tuesday, 11 August
Overcast. High 91°, low 74°.
Pressure29.85 inHg
Wind10 mph NW
Humidity34%
Visibility6.2 mi
Dew point55°
Wed, 1281° / 70°0.21
81 °
South Nyack, Wednesday, 12 August
Light rain. High 81°, low 70°.
Pressure29.71 inHg
Wind5.7 mph NW
Humidity65%
Visibility6.2 mi
Dew point67°
Thu, 1385° / 67°0.11
85 °
South Nyack, Thursday, 13 August
Light rain. High 85°, low 67°.
Pressure29.74 inHg
Wind12.8 mph NW
Humidity35%
Visibility—
Dew point52°
Fri, 1479° / 62°0
79 °
South Nyack, Friday, 14 August
Clear. High 79°, low 62°.
Pressure29.97 inHg
Wind9.5 mph NW
Humidity32%
Visibility—
Dew point44°
Sat, 1581° / 62°0
81 °
South Nyack, Saturday, 15 August
Clear. High 81°, low 62°.
Pressure30.06 inHg
Wind11.8 mph NW
Humidity32%
Visibility—
Dew point46°
Sun, 1681° / 61°0
81 °
South Nyack, Sunday, 16 August
Overcast. High 81°, low 61°.
Pressure30.15 inHg
Wind5.8 mph NW
Humidity27%
Visibility—
Dew point42°
Mon, 1784° / 66°0.13
84 °
South Nyack, Monday, 17 August
Light rain. High 84°, low 66°.
Pressure30.15 inHg
Wind13.8 mph S
Humidity45%
Visibility—
Dew point53°
Tue, 1876° / 67°0.11
76 °
South Nyack, Tuesday, 18 August
Light rain. High 76°, low 67°.
Pressure30.15 inHg
Wind7.1 mph SW
Humidity84%
Visibility—
Dew point64°
Wed, 1979° / 70°0.01
79 °
South Nyack, Wednesday, 19 August
Light rain. High 79°, low 70°.
Pressure29.97 inHg
Wind9.7 mph S
Humidity60%
Visibility—
Dew point61°
Thu, 2084° / 66°1.06
84 °
South Nyack, Thursday, 20 August
Heavy rain. High 84°, low 66°.
Pressure29.65 inHg
Wind12.3 mph NW
Humidity68%
Visibility—
Dew point64°
Fri, 2179° / 65°0
79 °
South Nyack, Friday, 21 August
Partly cloudy. High 79°, low 65°.
Pressure29.80 inHg
Wind13.6 mph NW
Humidity48%
Visibility—
Dew point51°
Sat, 2280° / 59°0
80 °
South Nyack, Saturday, 22 August
Clear. High 80°, low 59°.
Pressure30.06 inHg
Wind8.2 mph NW
Humidity31%
Visibility—
Dew point39°
Sun, 2378° / 64°0
78 °
South Nyack, Sunday, 23 August
Overcast. High 78°, low 64°.
Pressure30.06 inHg
Wind10.3 mph S
Humidity60%
Visibility—
Dew point55°
Mon, 2486° / 70°0.03
86 °
South Nyack, Monday, 24 August
Light rain. High 86°, low 70°.
Pressure29.88 inHg
Wind11.9 mph NW
Humidity48%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 65°0.08
80 °
South Nyack, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1968)
Record low55° (1971)
Wed, 2680° / 65°0.06
80 °
South Nyack, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.06 in
Chance of precipitation23%
Record high90° (1993)
Record low57° (1987)
Thu, 2781° / 66°0.16
81 °
South Nyack, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.16 in
Chance of precipitation35%
Record high93° (1980)
Record low56° (1969)
Fri, 2880° / 67°0.21
80 °
South Nyack, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.21 in
Chance of precipitation38%
Record high93° (2018)
Record low57° (1986)
Sat, 2979° / 66°0.15
79 °
South Nyack, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0.15 in
Chance of precipitation32%
Record high92° (2018)
Record low50° (1982)
Sun, 3080° / 65°0.07
80 °
South Nyack, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (1973)
Record low52° (1965)
Mon, 3179° / 65°0.04
79 °
South Nyack, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.04 in
Chance of precipitation17%
Record high94° (2010)
Record low53° (1965)
Tue, 0178° / 64°0.1
78 °
South Nyack, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.1 in
Chance of precipitation28%
Record high94° (2010)
Record low54° (2017)
Wed, 0278° / 64°0.18
78 °
South Nyack, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.18 in
Chance of precipitation32%
Record high93° (2010)
Record low53° (2017)
Thu, 0378° / 64°0.11
78 °
South Nyack, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (2015)
Record low52° (1967)
Fri, 0478° / 64°0.12
78 °
South Nyack, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.12 in
Chance of precipitation30%
Record high91° (2023)
Record low53° (1997)
Sat, 0577° / 64°0.06
77 °
South Nyack, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.06 in
Chance of precipitation27%
Record high92° (2023)
Record low54° (2000)
Sun, 0677° / 63°0.2
77 °
South Nyack, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.2 in
Chance of precipitation35%
Record high93° (2023)
Record low53° (1984)
Mon, 0777° / 63°0.1
77 °
South Nyack, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.1 in
Chance of precipitation30%
Record high92° (2023)
Record low51° (1984)
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 South Nyack, 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 South Nyack, 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.