Monthly outlook for Rochester, NY: average high 77.2°, average low 61.6°. That is 0.1° below the climate normal for August. Precipitation is expected on 7 days (about 2.1 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 9 August (86.2°), the coolest 14 August (53.9°).
77.2°/61.6°
Average high / low
−0.1°
Below normal
7 / 6
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
77.4°
78°
-0.3°
18 August – 27 August
76.7°
76.3°
+0.2°
28 August – 6 September
at normal
75.3°
—
August records over 66 years
93.6°14 August 2002All-time high
46.2°30 August 1965All-time low
Sun, 0986° / 67°0
86 °
Rochester, Sunday, 9 August
Clear. High 86°, low 67°.
Pressure30.03 inHg
Wind8.1 mph NW
Humidity47%
Visibility6.2 mi
Dew point55°
Mon, 1082° / 69°0.1
82 °
Rochester, Monday, 10 August
Light rain. High 82°, low 69°.
Pressure29.88 inHg
Wind10.6 mph SW
Humidity56%
Visibility6.2 mi
Dew point64°
Tue, 1180° / 63°0.23
80 °
Rochester, Tuesday, 11 August
Rain. High 80°, low 63°.
Pressure29.88 inHg
Wind8.2 mph NW
Humidity49%
Visibility6.2 mi
Dew point58°
Wed, 1275° / 65°0.58
75 °
Rochester, Wednesday, 12 August
Rain. High 75°, low 65°.
Pressure29.74 inHg
Wind2.3 mph SW
Humidity76%
Visibility6.2 mi
Dew point67°
Thu, 1368° / 61°0.02
68 °
Rochester, Thursday, 13 August
Light rain. High 68°, low 61°.
Pressure29.85 inHg
Wind16 mph NW
Humidity55%
Visibility—
Dew point50°
Fri, 1473° / 54°0.02
73 °
Rochester, Friday, 14 August
Light rain. High 73°, low 54°.
Pressure30.03 inHg
Wind12.8 mph W
Humidity51%
Visibility—
Dew point50°
Sat, 1573° / 59°0
73 °
Rochester, Saturday, 15 August
Light rain. High 73°, low 59°.
Pressure30.21 inHg
Wind11.8 mph W
Humidity51%
Visibility—
Dew point51°
Sun, 1675° / 57°0
75 °
Rochester, Sunday, 16 August
Overcast. High 75°, low 57°.
Pressure30.18 inHg
Wind7.2 mph SW
Humidity49%
Visibility—
Dew point53°
Mon, 1777° / 59°0
77 °
Rochester, Monday, 17 August
Overcast. High 77°, low 59°.
Pressure30.03 inHg
Wind6.8 mph S
Humidity51%
Visibility—
Dew point56°
Tue, 1880° / 62°0
80 °
Rochester, Tuesday, 18 August
Overcast. High 80°, low 62°.
Pressure30.00 inHg
Wind5.8 mph SW
Humidity47%
Visibility—
Dew point56°
Wed, 1985° / 65°0.74
85 °
Rochester, Wednesday, 19 August
Heavy rain. High 85°, low 65°.
Pressure29.74 inHg
Wind18.6 mph W
Humidity46%
Visibility—
Dew point60°
Thu, 2068° / 60°0.11
68 °
Rochester, Thursday, 20 August
Light rain. High 68°, low 60°.
Pressure29.65 inHg
Wind23 mph NW
Humidity74%
Visibility—
Dew point58°
Fri, 2171° / 60°0
71 °
Rochester, Friday, 21 August
Clear. High 71°, low 60°.
Pressure29.94 inHg
Wind14.3 mph NW
Humidity45%
Visibility—
Dew point46°
Sat, 2272° / 55°0
72 °
Rochester, Saturday, 22 August
Partly cloudy. High 72°, low 55°.
Pressure30.06 inHg
Wind8.1 mph SE
Humidity41%
Visibility—
Dew point45°
Sun, 2385° / 61°0.11
85 °
Rochester, Sunday, 23 August
Light rain. High 85°, low 61°.
Pressure29.83 inHg
Wind13.2 mph SW
Humidity69%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 63°0.1
76 °
Rochester, Monday, 24 August
Climate normal for this date — 60-year average.
Average high76°
Average low63°
Average precipitation0.1 in
Chance of precipitation37%
Record high88° (1968)
Record low49° (1971)
Tue, 2577° / 63°0.11
77 °
Rochester, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.11 in
Chance of precipitation30%
Record high89° (2021)
Record low53° (1971)
Wed, 2678° / 63°0.06
78 °
Rochester, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.06 in
Chance of precipitation32%
Record high87° (1962)
Record low52° (2017)
Thu, 2777° / 64°0.11
77 °
Rochester, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.11 in
Chance of precipitation45%
Record high90° (2024)
Record low52° (2017)
Fri, 2877° / 64°0.15
77 °
Rochester, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.15 in
Chance of precipitation48%
Record high91° (2018)
Record low51° (1986)
Sat, 2976° / 63°0.1
76 °
Rochester, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low63°
Average precipitation0.1 in
Chance of precipitation38%
Record high91° (2022)
Record low48° (1982)
Sun, 3076° / 62°0.07
76 °
Rochester, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high89° (1991)
Record low46° (1965)
Mon, 3175° / 62°0.11
75 °
Rochester, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.11 in
Chance of precipitation35%
Record high89° (2010)
Record low50° (1976)
Tue, 0175° / 62°0.06
75 °
Rochester, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.06 in
Chance of precipitation23%
Record high90° (2010)
Record low52° (2009)
Wed, 0275° / 62°0.13
75 °
Rochester, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.13 in
Chance of precipitation40%
Record high87° (2010)
Record low47° (2017)
Thu, 0375° / 62°0.09
75 °
Rochester, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.09 in
Chance of precipitation32%
Record high90° (2010)
Record low48° (1976)
Fri, 0474° / 62°0.09
74 °
Rochester, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.09 in
Chance of precipitation30%
Record high89° (1973)
Record low49° (1987)
Sat, 0575° / 61°0.09
75 °
Rochester, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.09 in
Chance of precipitation35%
Record high93° (2018)
Record low51° (1963)
Sun, 0675° / 61°0.09
75 °
Rochester, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.09 in
Chance of precipitation35%
Record high88° (2023)
Record low50° (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 Rochester, 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 Rochester, 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.