Monthly outlook for Montclair Colony, NY: average high 79.2°, average low 69.8°. That is 2.7° above the climate normal for August. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 9 August (88.1°), the coolest 15 August (62.8°).
79.2°/69.8°
Average high / low
+2.7°
Above normal
5 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79.1°
74.7°
+2.4°
19 August – 28 August
79.3°
73.5°
+3.2°
29 August – 7 September
at normal
72.4°
—
August records over 66 years
86.9°30 August 2018All-time high
52.5°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Sag Harbor (5 mi).
Mon, 1086° / 70°0.02
86 °
Montclair Colony, Monday, 10 August
Light rain. High 86°, low 70°.
Pressure30.00 inHg
Wind1.7 mph W
Humidity50%
Visibility6.2 mi
Dew point57°
Tue, 1181° / 73°0.03
81 °
Montclair Colony, Tuesday, 11 August
Light rain. High 81°, low 73°.
Pressure29.83 inHg
Wind8.9 mph NW
Humidity83%
Visibility6.2 mi
Dew point69°
Wed, 1276° / 71°0
76 °
Montclair Colony, Wednesday, 12 August
Overcast. High 76°, low 71°.
Pressure29.77 inHg
Wind3.3 mph E
Humidity65%
Visibility6.2 mi
Dew point62°
Thu, 1378° / 70°0.15
78 °
Montclair Colony, Thursday, 13 August
Light rain. High 78°, low 70°.
Pressure29.71 inHg
Wind20.2 mph NW
Humidity85%
Visibility—
Dew point68°
Fri, 1475° / 65°0
75 °
Montclair Colony, Friday, 14 August
Clear. High 75°, low 65°.
Pressure29.97 inHg
Wind21.5 mph NW
Humidity52%
Visibility—
Dew point49°
Sat, 1576° / 63°0
76 °
Montclair Colony, Saturday, 15 August
Clear. High 76°, low 63°.
Pressure30.03 inHg
Wind20.6 mph NW
Humidity50%
Visibility—
Dew point49°
Sun, 1677° / 66°0
77 °
Montclair Colony, Sunday, 16 August
Partly cloudy. High 77°, low 66°.
Pressure30.12 inHg
Wind13.3 mph NW
Humidity48%
Visibility—
Dew point51°
Mon, 1776° / 68°0.01
76 °
Montclair Colony, Monday, 17 August
Light rain. High 76°, low 68°.
Pressure30.03 inHg
Wind15.6 mph S
Humidity55%
Visibility—
Dew point56°
Tue, 1878° / 67°0.06
78 °
Montclair Colony, Tuesday, 18 August
Light rain. High 78°, low 67°.
Pressure30.06 inHg
Wind12.8 mph SW
Humidity64%
Visibility—
Dew point58°
Wed, 1976° / 70°0.01
76 °
Montclair Colony, Wednesday, 19 August
Light rain. High 76°, low 70°.
Pressure30.15 inHg
Wind10.8 mph S
Humidity65%
Visibility—
Dew point61°
Thu, 2078° / 71°0
78 °
Montclair Colony, Thursday, 20 August
Overcast. High 78°, low 71°.
Pressure30.09 inHg
Wind11.2 mph S
Humidity73%
Visibility—
Dew point66°
Fri, 2179° / 73°0.12
79 °
Montclair Colony, Friday, 21 August
Rain. High 79°, low 73°.
Pressure29.94 inHg
Wind17 mph S
Humidity69%
Visibility—
Dew point67°
Sat, 2283° / 74°0.14
83 °
Montclair Colony, Saturday, 22 August
Rain. High 83°, low 74°.
Pressure29.88 inHg
Wind15 mph SW
Humidity83%
Visibility—
Dew point72°
Sun, 2382° / 72°0
82 °
Montclair Colony, Sunday, 23 August
Clear. High 82°, low 72°.
Pressure29.94 inHg
Wind8.7 mph NW
Humidity64%
Visibility—
Dew point63°
Mon, 2478° / 73°0.13
78 °
Montclair Colony, Monday, 24 August
Light rain. High 78°, low 73°.
Pressure30.00 inHg
Wind19.2 mph E
Humidity81%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 67°0.1
73 °
Montclair Colony, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.1 in
Chance of precipitation27%
Record high87° (2020)
Record low57° (1963)
Wed, 2673° / 68°0.06
73 °
Montclair Colony, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low68°
Average precipitation0.06 in
Chance of precipitation18%
Record high83° (2021)
Record low59° (1963)
Thu, 2774° / 68°0.09
74 °
Montclair Colony, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high74°
Average low68°
Average precipitation0.09 in
Chance of precipitation28%
Record high84° (2020)
Record low59° (1969)
Fri, 2873° / 68°0.16
73 °
Montclair Colony, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low68°
Average precipitation0.16 in
Chance of precipitation25%
Record high86° (2024)
Record low58° (1986)
Sat, 2973° / 67°0.17
73 °
Montclair Colony, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.17 in
Chance of precipitation33%
Record high83° (2018)
Record low53° (1982)
Sun, 3073° / 67°0.1
73 °
Montclair Colony, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.1 in
Chance of precipitation23%
Record high87° (2018)
Record low55° (1965)
Mon, 3173° / 67°0.06
73 °
Montclair Colony, Monday, 31 August
Climate normal for this date — 60-year average.
Average high73°
Average low67°
Average precipitation0.06 in
Chance of precipitation18%
Record high82° (2022)
Record low56° (1976)
Tue, 0172° / 66°0.07
72 °
Montclair Colony, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.07 in
Chance of precipitation25%
Record high81° (2022)
Record low56° (2017)
Wed, 0272° / 66°0.21
72 °
Montclair Colony, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.21 in
Chance of precipitation25%
Record high81° (1966)
Record low57° (1967)
Thu, 0372° / 66°0.1
72 °
Montclair Colony, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.1 in
Chance of precipitation25%
Record high81° (2020)
Record low58° (1976)
Fri, 0473° / 66°0.14
73 °
Montclair Colony, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high85° (2018)
Record low56° (1997)
Sat, 0572° / 66°0.05
72 °
Montclair Colony, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high72°
Average low66°
Average precipitation0.05 in
Chance of precipitation17%
Record high89° (2023)
Record low56° (2000)
Sun, 0672° / 65°0.12
72 °
Montclair Colony, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high72°
Average low65°
Average precipitation0.12 in
Chance of precipitation37%
Record high87° (2023)
Record low56° (1962)
Mon, 0772° / 65°0.1
72 °
Montclair Colony, Monday, 7 September
Climate normal for this date — 60-year average.
Average high72°
Average low65°
Average precipitation0.1 in
Chance of precipitation23%
Record high88° (2023)
Record low57° (1962)
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 Montclair Colony, 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 Montclair Colony, 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.