Monthly outlook for Sinclairville, NY: average high 74.4°, average low 57.3°. That is 0.1° above the climate normal for August. Precipitation is expected on 7 days (about 1.6 inches), against a normal of 8 days and 2.5 inches. The warmest day looks like 9 August (84.5°), the coolest 22 August (48°).
74.4°/57.3°
Average high / low
+0.1°
Above normal
7 / 8
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
74.5°
74.8°
-0.2°
18 August – 27 August
74.3°
73.6°
+0.4°
28 August – 6 September
at normal
72.6°
—
August records over 66 years
90.9°3 August 1988All-time high
44.6°30 August 1965All-time low
Sun, 0984° / 65°0
84 °
Sinclairville, Sunday, 9 August
Clear. High 84°, low 65°.
Pressure30.06 inHg
Wind2.3 mph SW
Humidity56%
Visibility6.2 mi
Dew point59°
Mon, 1074° / 64°0.04
74 °
Sinclairville, Monday, 10 August
Light rain. High 74°, low 64°.
Pressure29.97 inHg
Wind12.9 mph SW
Humidity84%
Visibility6.2 mi
Dew point64°
Tue, 1179° / 63°0.76
79 °
Sinclairville, Tuesday, 11 August
Heavy rain. High 79°, low 63°.
Pressure29.91 inHg
Wind6.7 mph SW
Humidity69%
Visibility6.2 mi
Dew point66°
Wed, 1274° / 63°0.12
74 °
Sinclairville, Wednesday, 12 August
Light rain. High 74°, low 63°.
Pressure29.77 inHg
Wind9.1 mph W
Humidity85%
Visibility6.2 mi
Dew point66°
Thu, 1364° / 55°0.02
64 °
Sinclairville, Thursday, 13 August
Light rain. High 64°, low 55°.
Pressure29.94 inHg
Wind13.8 mph NW
Humidity62%
Visibility—
Dew point50°
Fri, 1469° / 50°0.08
69 °
Sinclairville, Friday, 14 August
Light rain. High 69°, low 50°.
Pressure30.06 inHg
Wind13 mph NW
Humidity51%
Visibility—
Dew point49°
Sat, 1569° / 51°0
69 °
Sinclairville, Saturday, 15 August
Clear. High 69°, low 51°.
Pressure30.27 inHg
Wind9.1 mph NW
Humidity50%
Visibility—
Dew point48°
Sun, 1674° / 52°0
74 °
Sinclairville, Sunday, 16 August
Overcast. High 74°, low 52°.
Pressure30.18 inHg
Wind4.9 mph N
Humidity54%
Visibility—
Dew point54°
Mon, 1777° / 56°0
77 °
Sinclairville, Monday, 17 August
Overcast. High 77°, low 56°.
Pressure30.03 inHg
Wind7.5 mph N
Humidity50%
Visibility—
Dew point55°
Tue, 1878° / 55°0
78 °
Sinclairville, Tuesday, 18 August
Partly cloudy. High 78°, low 55°.
Pressure30.00 inHg
Wind5.8 mph SE
Humidity45%
Visibility—
Dew point53°
Wed, 1980° / 61°0.28
80 °
Sinclairville, Wednesday, 19 August
Rain. High 80°, low 61°.
Pressure29.77 inHg
Wind14.7 mph SW
Humidity58%
Visibility—
Dew point61°
Thu, 2067° / 57°0.13
67 °
Sinclairville, Thursday, 20 August
Light rain. High 67°, low 57°.
Pressure29.77 inHg
Wind17.7 mph NW
Humidity82%
Visibility—
Dew point57°
Fri, 2167° / 51°0
67 °
Sinclairville, Friday, 21 August
Clear. High 67°, low 51°.
Pressure30.00 inHg
Wind11.6 mph NW
Humidity48%
Visibility—
Dew point45°
Sat, 2271° / 48°0
71 °
Sinclairville, Saturday, 22 August
Overcast. High 71°, low 48°.
Pressure30.06 inHg
Wind5.3 mph S
Humidity40%
Visibility—
Dew point43°
Sun, 2382° / 61°0.05
82 °
Sinclairville, Sunday, 23 August
Light rain. High 82°, low 61°.
Pressure29.85 inHg
Wind16.2 mph SW
Humidity58%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2473° / 60°0.11
73 °
Sinclairville, Monday, 24 August
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.11 in
Chance of precipitation33%
Record high86° (2007)
Record low47° (1971)
Tue, 2574° / 60°0.13
74 °
Sinclairville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.13 in
Chance of precipitation37%
Record high85° (2021)
Record low50° (2019)
Wed, 2675° / 60°0.12
75 °
Sinclairville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.12 in
Chance of precipitation42%
Record high83° (1993)
Record low49° (2017)
Thu, 2775° / 61°0.2
75 °
Sinclairville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.2 in
Chance of precipitation52%
Record high85° (2024)
Record low49° (2017)
Fri, 2874° / 62°0.19
74 °
Sinclairville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.19 in
Chance of precipitation50%
Record high85° (2018)
Record low48° (1986)
Sat, 2973° / 61°0.17
73 °
Sinclairville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.17 in
Chance of precipitation42%
Record high85° (2022)
Record low46° (1982)
Sun, 3073° / 60°0.13
73 °
Sinclairville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.13 in
Chance of precipitation42%
Record high86° (1991)
Record low45° (1965)
Mon, 3173° / 59°0.14
73 °
Sinclairville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high73°
Average low59°
Average precipitation0.14 in
Chance of precipitation37%
Record high85° (1962)
Record low45° (2025)
Tue, 0173° / 59°0.09
73 °
Sinclairville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high73°
Average low59°
Average precipitation0.09 in
Chance of precipitation25%
Record high84° (2010)
Record low46° (2017)
Wed, 0273° / 59°0.19
73 °
Sinclairville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low59°
Average precipitation0.19 in
Chance of precipitation48%
Record high86° (2011)
Record low46° (2017)
Thu, 0372° / 59°0.13
72 °
Sinclairville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high72°
Average low59°
Average precipitation0.13 in
Chance of precipitation40%
Record high86° (2011)
Record low46° (2024)
Fri, 0472° / 59°0.14
72 °
Sinclairville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high72°
Average low59°
Average precipitation0.14 in
Chance of precipitation37%
Record high85° (1973)
Record low48° (1987)
Sat, 0572° / 59°0.12
72 °
Sinclairville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high72°
Average low59°
Average precipitation0.12 in
Chance of precipitation42%
Record high85° (2018)
Record low48° (1994)
Sun, 0672° / 58°0.1
72 °
Sinclairville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high72°
Average low58°
Average precipitation0.1 in
Chance of precipitation40%
Record high87° (2007)
Record low46° (2000)
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 Sinclairville, 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 Sinclairville, 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.