Monthly outlook for South New Haven, NY: average high 73.1°, average low 59.8°. That is 1.1° below the climate normal for August. Precipitation is expected on 6 days (about 1.8 inches), against a normal of 7 days and 2.2 inches. The warmest day looks like 9 August (83.9°), the coolest 15 August (54°).
73.1°/59.8°
Average high / low
−1.1°
Below normal
6 / 7
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
73.7°
75.8°
-1.1°
19 August – 28 August
72°
74.4°
-1.3°
29 August – 7 September
at normal
73.1°
—
August records over 66 years
90.5°14 August 2002All-time high
49.3°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — SUNY Oswego (10 mi).
Mon, 1081° / 66°0.22
81 °
South New Haven, Monday, 10 August
Rain. High 81°, low 66°.
Pressure29.94 inHg
Wind7.4 mph SE
Humidity97%
Visibility6.2 mi
Dew point64°
Tue, 1176° / 67°0.03
76 °
South New Haven, Tuesday, 11 August
Light rain. High 76°, low 67°.
Pressure29.91 inHg
Wind6.8 mph NW
Humidity59%
Visibility6.2 mi
Dew point59°
Wed, 1277° / 63°0.02
77 °
South New Haven, Wednesday, 12 August
Light rain. High 77°, low 63°.
Pressure29.80 inHg
Wind3.1 mph N
Humidity57%
Visibility6.2 mi
Dew point59°
Thu, 1371° / 65°0.05
71 °
South New Haven, Thursday, 13 August
Light rain. High 71°, low 65°.
Pressure29.83 inHg
Wind20 mph NW
Humidity52%
Visibility—
Dew point52°
Fri, 1468° / 60°0.01
68 °
South New Haven, Friday, 14 August
Light rain. High 68°, low 60°.
Pressure30.06 inHg
Wind12.7 mph N
Humidity48%
Visibility—
Dew point46°
Sat, 1568° / 54°0
68 °
South New Haven, Saturday, 15 August
Clear. High 68°, low 54°.
Pressure30.27 inHg
Wind11 mph NW
Humidity52%
Visibility—
Dew point48°
Sun, 1669° / 54°0
69 °
South New Haven, Sunday, 16 August
Overcast. High 69°, low 54°.
Pressure30.15 inHg
Wind6.2 mph S
Humidity52%
Visibility—
Dew point49°
Mon, 1770° / 55°0
70 °
South New Haven, Monday, 17 August
Partly cloudy. High 70°, low 55°.
Pressure29.94 inHg
Wind8.2 mph NW
Humidity56%
Visibility—
Dew point52°
Tue, 1872° / 57°0
72 °
South New Haven, Tuesday, 18 August
Partly cloudy. High 72°, low 57°.
Pressure29.97 inHg
Wind8.3 mph NW
Humidity62%
Visibility—
Dew point57°
Wed, 1982° / 60°0.32
82 °
South New Haven, Wednesday, 19 August
Rain. High 82°, low 60°.
Pressure29.71 inHg
Wind16.5 mph S
Humidity51%
Visibility—
Dew point60°
Thu, 2068° / 59°0.17
68 °
South New Haven, Thursday, 20 August
Light rain. High 68°, low 59°.
Pressure29.80 inHg
Wind14.8 mph NW
Humidity80%
Visibility—
Dew point57°
Fri, 2172° / 54°0
72 °
South New Haven, Friday, 21 August
Overcast. High 72°, low 54°.
Pressure29.85 inHg
Wind11.9 mph W
Humidity60%
Visibility—
Dew point55°
Sat, 2274° / 56°0.24
74 °
South New Haven, Saturday, 22 August
Rain. High 74°, low 56°.
Pressure29.83 inHg
Wind17.9 mph SW
Humidity57%
Visibility—
Dew point56°
Sun, 2367° / 61°0.67
67 °
South New Haven, Sunday, 23 August
Rain. High 67°, low 61°.
Pressure29.83 inHg
Wind18.9 mph W
Humidity85%
Visibility—
Dew point60°
Mon, 2469° / 55°0
69 °
South New Haven, Monday, 24 August
Mostly clear. High 69°, low 55°.
Pressure30.21 inHg
Wind8 mph NW
Humidity46%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2574° / 64°0.12
74 °
South New Haven, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high74°
Average low64°
Average precipitation0.12 in
Chance of precipitation42%
Record high87° (2021)
Record low55° (1971)
Wed, 2675° / 65°0.09
75 °
South New Haven, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high75°
Average low65°
Average precipitation0.09 in
Chance of precipitation37%
Record high84° (2012)
Record low55° (2017)
Thu, 2774° / 65°0.15
74 °
South New Haven, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.15 in
Chance of precipitation48%
Record high86° (2024)
Record low54° (2017)
Fri, 2875° / 65°0.22
75 °
South New Haven, Friday, 28 August
Climate normal for this date — 60-year average.
Average high75°
Average low65°
Average precipitation0.22 in
Chance of precipitation50%
Record high90° (2018)
Record low52° (1986)
Sat, 2974° / 65°0.15
74 °
South New Haven, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.15 in
Chance of precipitation42%
Record high90° (2022)
Record low53° (1986)
Sun, 3073° / 64°0.12
73 °
South New Haven, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low64°
Average precipitation0.12 in
Chance of precipitation35%
Record high83° (1991)
Record low49° (1965)
Mon, 3173° / 64°0.14
73 °
South New Haven, Monday, 31 August
Climate normal for this date — 60-year average.
Average high73°
Average low64°
Average precipitation0.14 in
Chance of precipitation42%
Record high85° (1993)
Record low52° (1965)
Tue, 0173° / 63°0.07
73 °
South New Haven, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high73°
Average low63°
Average precipitation0.07 in
Chance of precipitation30%
Record high87° (2010)
Record low54° (2017)
Wed, 0273° / 63°0.15
73 °
South New Haven, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low63°
Average precipitation0.15 in
Chance of precipitation40%
Record high84° (2010)
Record low50° (2017)
Thu, 0373° / 63°0.11
73 °
South New Haven, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high73°
Average low63°
Average precipitation0.11 in
Chance of precipitation42%
Record high88° (2018)
Record low53° (2017)
Fri, 0473° / 63°0.11
73 °
South New Haven, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low63°
Average precipitation0.11 in
Chance of precipitation33%
Record high86° (1973)
Record low53° (1963)
Sat, 0573° / 63°0.11
73 °
South New Haven, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high73°
Average low63°
Average precipitation0.11 in
Chance of precipitation35%
Record high89° (2018)
Record low51° (2000)
Sun, 0673° / 63°0.13
73 °
South New Haven, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low63°
Average precipitation0.13 in
Chance of precipitation40%
Record high86° (2023)
Record low52° (2000)
Mon, 0773° / 62°0.15
73 °
South New Haven, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.15 in
Chance of precipitation45%
Record high88° (2007)
Record low52° (1982)
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 New Haven, 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 New Haven, 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.