Monthly outlook for Arnett, NY: average high 74.8°, average low 60.3°. That is 1.4° below the climate normal for August. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 9 August (84.2°), the coolest 23 August (52.2°).
74.8°/60.3°
Average high / low
−1.4°
Below normal
7 / 6
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
76.8°
78°
-0.7°
18 August – 27 August
71.4°
76.3°
-2.7°
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
Climate normals and records are computed from the nearest reference point — Rochester (2 mi).
Sun, 0984° / 67°0
84 °
Arnett, Sunday, 9 August
Clear. High 84°, low 67°.
Pressure30.03 inHg
Wind8.1 mph NW
Humidity45%
Visibility6.2 mi
Dew point55°
Mon, 1081° / 70°0.06
81 °
Arnett, Monday, 10 August
Light rain. High 81°, low 70°.
Pressure29.91 inHg
Wind12.9 mph SW
Humidity63%
Visibility6.2 mi
Dew point66°
Tue, 1182° / 63°0.28
82 °
Arnett, Tuesday, 11 August
Rain. High 82°, low 63°.
Pressure29.88 inHg
Wind7.1 mph W
Humidity52%
Visibility6.2 mi
Dew point63°
Wed, 1280° / 65°0.13
80 °
Arnett, Wednesday, 12 August
Light rain. High 80°, low 65°.
Pressure29.77 inHg
Wind5.6 mph NW
Humidity57%
Visibility6.2 mi
Dew point62°
Thu, 1368° / 57°0.16
68 °
Arnett, Thursday, 13 August
Light rain. High 68°, low 57°.
Pressure29.85 inHg
Wind13.5 mph W
Humidity67%
Visibility—
Dew point54°
Fri, 1467° / 55°0
67 °
Arnett, Friday, 14 August
Overcast. High 67°, low 55°.
Pressure30.03 inHg
Wind11.7 mph NW
Humidity47%
Visibility—
Dew point45°
Sat, 1570° / 55°0.01
70 °
Arnett, Saturday, 15 August
Light rain. High 70°, low 55°.
Pressure30.24 inHg
Wind9.6 mph NW
Humidity47%
Visibility—
Dew point46°
Sun, 1676° / 54°0
76 °
Arnett, Sunday, 16 August
Partly cloudy. High 76°, low 54°.
Pressure30.27 inHg
Wind8.1 mph SW
Humidity41%
Visibility—
Dew point48°
Mon, 1777° / 61°0
77 °
Arnett, Monday, 17 August
Overcast. High 77°, low 61°.
Pressure30.06 inHg
Wind9.1 mph SW
Humidity56%
Visibility—
Dew point57°
Tue, 1876° / 63°0.32
76 °
Arnett, Tuesday, 18 August
Light rain. High 76°, low 63°.
Pressure29.91 inHg
Wind7.9 mph W
Humidity81%
Visibility—
Dew point66°
Wed, 1970° / 61°0.03
70 °
Arnett, Wednesday, 19 August
Light rain. High 70°, low 61°.
Pressure30.00 inHg
Wind9.2 mph N
Humidity55%
Visibility—
Dew point52°
Thu, 2076° / 57°0
76 °
Arnett, Thursday, 20 August
Overcast. High 76°, low 57°.
Pressure29.94 inHg
Wind6.8 mph E
Humidity44%
Visibility—
Dew point50°
Fri, 2177° / 63°0
77 °
Arnett, Friday, 21 August
Overcast. High 77°, low 63°.
Pressure29.83 inHg
Wind8.8 mph N
Humidity62%
Visibility—
Dew point61°
Sat, 2264° / 53°0.08
64 °
Arnett, Saturday, 22 August
Light rain. High 64°, low 53°.
Pressure29.85 inHg
Wind13 mph W
Humidity79%
Visibility—
Dew point57°
Sun, 2366° / 52°0.02
66 °
Arnett, Sunday, 23 August
Light rain. High 66°, low 52°.
Pressure30.09 inHg
Wind17.9 mph NW
Humidity44%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 63°0.1
76 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 °
Arnett, 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 Arnett, 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 Arnett, 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.