Monthly outlook for Colchester, NY: average high 70.7°, average low 53.7°. That is 2.9° below the climate normal for August. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 9 August (78.9°), the coolest 22 August (43.1°).
70.7°/53.7°
Average high / low
−2.9°
Below normal
7 / 6
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
73°
76.6°
-2°
18 August – 27 August
66.9°
74.9°
-4.5°
28 August – 6 September
at normal
73.6°
—
August records over 66 years
92.7°4 August 2022All-time high
42.1°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Hancock (12 mi).
Sun, 0979° / 62°0
79 °
Colchester, Sunday, 9 August
Clear. High 79°, low 62°.
Pressure30.03 inHg
Wind9.2 mph NW
Humidity55%
Visibility6.2 mi
Dew point61°
Mon, 1079° / 60°0.03
79 °
Colchester, Monday, 10 August
Light rain. High 79°, low 60°.
Pressure30.00 inHg
Wind3.3 mph SW
Humidity85%
Visibility6.2 mi
Dew point62°
Tue, 1179° / 62°0.04
79 °
Colchester, Tuesday, 11 August
Light rain. High 79°, low 62°.
Pressure29.88 inHg
Wind8.7 mph NW
Humidity47%
Visibility6.2 mi
Dew point54°
Wed, 1273° / 60°0.41
73 °
Colchester, Wednesday, 12 August
Rain. High 73°, low 60°.
Pressure29.74 inHg
Wind3.6 mph N
Humidity95%
Visibility6.2 mi
Dew point64°
Thu, 1369° / 51°0.02
69 °
Colchester, Thursday, 13 August
Light rain. High 69°, low 51°.
Pressure29.80 inHg
Wind13.8 mph NW
Humidity43%
Visibility—
Dew point44°
Fri, 1466° / 45°0
66 °
Colchester, Friday, 14 August
Overcast. High 66°, low 45°.
Pressure30.00 inHg
Wind11.3 mph NW
Humidity52%
Visibility—
Dew point44°
Sat, 1569° / 46°0
69 °
Colchester, Saturday, 15 August
Clear. High 69°, low 46°.
Pressure30.12 inHg
Wind13.4 mph NW
Humidity48%
Visibility—
Dew point46°
Sun, 1670° / 46°0
70 °
Colchester, Sunday, 16 August
Partly cloudy. High 70°, low 46°.
Pressure30.18 inHg
Wind6.5 mph N
Humidity39%
Visibility—
Dew point42°
Mon, 1769° / 51°0.06
69 °
Colchester, Monday, 17 August
Light rain. High 69°, low 51°.
Pressure30.12 inHg
Wind9.1 mph S
Humidity59%
Visibility—
Dew point53°
Tue, 1861° / 59°0.05
61 °
Colchester, Tuesday, 18 August
Light rain. High 61°, low 59°.
Pressure30.09 inHg
Wind4.8 mph S
Humidity98%
Visibility—
Dew point60°
Wed, 1967° / 59°0.19
67 °
Colchester, Wednesday, 19 August
Rain. High 67°, low 59°.
Pressure29.91 inHg
Wind8.9 mph S
Humidity94%
Visibility—
Dew point62°
Thu, 2068° / 53°0.72
68 °
Colchester, Thursday, 20 August
Heavy rain. High 68°, low 53°.
Pressure29.62 inHg
Wind13.1 mph W
Humidity62%
Visibility—
Dew point53°
Fri, 2166° / 47°0.02
66 °
Colchester, Friday, 21 August
Light rain. High 66°, low 47°.
Pressure29.83 inHg
Wind15.9 mph NW
Humidity48%
Visibility—
Dew point44°
Sat, 2268° / 43°0
68 °
Colchester, Saturday, 22 August
Clear. High 68°, low 43°.
Pressure30.06 inHg
Wind8.3 mph NW
Humidity36%
Visibility—
Dew point38°
Sun, 2370° / 50°0.03
70 °
Colchester, Sunday, 23 August
Light rain. High 70°, low 50°.
Pressure29.97 inHg
Wind12.5 mph S
Humidity68%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2474° / 59°0.09
74 °
Colchester, Monday, 24 August
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.09 in
Chance of precipitation25%
Record high86° (2020)
Record low44° (1971)
Tue, 2575° / 59°0.11
75 °
Colchester, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation28%
Record high90° (2007)
Record low45° (1971)
Wed, 2676° / 59°0.09
76 °
Colchester, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.09 in
Chance of precipitation28%
Record high86° (1975)
Record low47° (1977)
Thu, 2776° / 60°0.2
76 °
Colchester, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.2 in
Chance of precipitation38%
Record high87° (1993)
Record low48° (1969)
Fri, 2875° / 61°0.22
75 °
Colchester, Friday, 28 August
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.22 in
Chance of precipitation50%
Record high88° (2018)
Record low47° (1968)
Sat, 2974° / 60°0.22
74 °
Colchester, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.22 in
Chance of precipitation43%
Record high87° (1973)
Record low42° (1982)
Sun, 3075° / 59°0.15
75 °
Colchester, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.15 in
Chance of precipitation30%
Record high89° (1973)
Record low43° (1965)
Mon, 3174° / 58°0.13
74 °
Colchester, Monday, 31 August
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.13 in
Chance of precipitation32%
Record high89° (1973)
Record low44° (1965)
Tue, 0173° / 57°0.11
73 °
Colchester, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.11 in
Chance of precipitation28%
Record high86° (1973)
Record low44° (2017)
Wed, 0273° / 57°0.15
73 °
Colchester, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.15 in
Chance of precipitation45%
Record high87° (1980)
Record low44° (2017)
Thu, 0373° / 58°0.11
73 °
Colchester, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high73°
Average low58°
Average precipitation0.11 in
Chance of precipitation28%
Record high86° (1973)
Record low45° (1976)
Fri, 0473° / 58°0.11
73 °
Colchester, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low58°
Average precipitation0.11 in
Chance of precipitation32%
Record high88° (1973)
Record low45° (1987)
Sat, 0573° / 57°0.1
73 °
Colchester, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.1 in
Chance of precipitation30%
Record high88° (2008)
Record low46° (2000)
Sun, 0673° / 57°0.17
73 °
Colchester, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.17 in
Chance of precipitation32%
Record high86° (2023)
Record low44° (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 Colchester, 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 Colchester, 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.