Monthly outlook for Terryville, CT: average high 79.2°, average low 60°. That is 0.3° above the climate normal for August. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 6 days and 2.5 inches. The warmest day looks like 10 August (89.5°), the coolest 22 August (51.4°).
79.2°/60°
Average high / low
+0.3°
Above normal
5 / 6
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81.2°
79.4°
+1°
18 August – 27 August
75.8°
77.3°
-0.9°
28 August – 6 September
at normal
76.1°
—
August records over 66 years
97.2°2 August 1975All-time high
44.2°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Plymouth (1 mi).
Sun, 0988° / 69°0.01
88 °
Terryville, Sunday, 9 August
Light rain. High 88°, low 69°.
Pressure29.97 inHg
Wind8.5 mph NW
Humidity45%
Visibility6.2 mi
Dew point63°
Mon, 1089° / 67°0
89 °
Terryville, Monday, 10 August
Clear. High 89°, low 67°.
Pressure29.97 inHg
Wind8.4 mph SW
Humidity43%
Visibility6.2 mi
Dew point61°
Tue, 1185° / 68°0
85 °
Terryville, Tuesday, 11 August
Overcast. High 85°, low 68°.
Pressure29.85 inHg
Wind10.6 mph NW
Humidity42%
Visibility6.2 mi
Dew point57°
Wed, 1275° / 63°0.19
75 °
Terryville, Wednesday, 12 August
Rain. High 75°, low 63°.
Pressure29.74 inHg
Wind6.7 mph NE
Humidity87%
Visibility6.2 mi
Dew point61°
Thu, 1380° / 60°0.04
80 °
Terryville, Thursday, 13 August
Light rain. High 80°, low 60°.
Pressure29.71 inHg
Wind10 mph NW
Humidity51%
Visibility—
Dew point56°
Fri, 1475° / 54°0
75 °
Terryville, Friday, 14 August
Clear. High 75°, low 54°.
Pressure30.00 inHg
Wind9.4 mph NW
Humidity42%
Visibility—
Dew point43°
Sat, 1576° / 54°0
76 °
Terryville, Saturday, 15 August
Clear. High 76°, low 54°.
Pressure30.06 inHg
Wind12.4 mph NW
Humidity47%
Visibility—
Dew point47°
Sun, 1677° / 52°0
77 °
Terryville, Sunday, 16 August
Mostly clear. High 77°, low 52°.
Pressure30.18 inHg
Wind7 mph NW
Humidity37%
Visibility—
Dew point43°
Mon, 1781° / 55°0.03
81 °
Terryville, Monday, 17 August
Light rain. High 81°, low 55°.
Pressure30.15 inHg
Wind8.8 mph SW
Humidity47%
Visibility—
Dew point52°
Tue, 1873° / 61°0.26
73 °
Terryville, Tuesday, 18 August
Light rain. High 73°, low 61°.
Pressure30.15 inHg
Wind7.7 mph SW
Humidity91%
Visibility—
Dew point66°
Wed, 1977° / 60°0.03
77 °
Terryville, Wednesday, 19 August
Light rain. High 77°, low 60°.
Pressure30.00 inHg
Wind8.4 mph S
Humidity74%
Visibility—
Dew point60°
Thu, 2081° / 61°0.59
81 °
Terryville, Thursday, 20 August
Rain. High 81°, low 61°.
Pressure29.65 inHg
Wind10.8 mph W
Humidity96%
Visibility—
Dew point67°
Fri, 2174° / 57°0
74 °
Terryville, Friday, 21 August
Overcast. High 74°, low 57°.
Pressure29.77 inHg
Wind13.7 mph NW
Humidity64%
Visibility—
Dew point53°
Sat, 2275° / 51°0
75 °
Terryville, Saturday, 22 August
Clear. High 75°, low 51°.
Pressure30.06 inHg
Wind9 mph NW
Humidity33%
Visibility—
Dew point37°
Sun, 2375° / 56°0.02
75 °
Terryville, Sunday, 23 August
Light rain. High 75°, low 56°.
Pressure30.09 inHg
Wind9.3 mph S
Humidity66%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 60°0.1
76 °
Terryville, Monday, 24 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.1 in
Chance of precipitation28%
Record high91° (1998)
Record low47° (1971)
Tue, 2578° / 60°0.12
78 °
Terryville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.12 in
Chance of precipitation28%
Record high90° (2020)
Record low48° (1971)
Wed, 2678° / 60°0.09
78 °
Terryville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.09 in
Chance of precipitation28%
Record high90° (2021)
Record low49° (1963)
Thu, 2778° / 62°0.18
78 °
Terryville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.18 in
Chance of precipitation38%
Record high91° (1993)
Record low50° (1989)
Fri, 2878° / 62°0.21
78 °
Terryville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.21 in
Chance of precipitation37%
Record high91° (2018)
Record low51° (1968)
Sat, 2977° / 61°0.17
77 °
Terryville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.17 in
Chance of precipitation37%
Record high91° (2018)
Record low45° (1982)
Sun, 3077° / 60°0.09
77 °
Terryville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.09 in
Chance of precipitation23%
Record high91° (1973)
Record low44° (1986)
Mon, 3177° / 60°0.07
77 °
Terryville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.07 in
Chance of precipitation23%
Record high92° (1973)
Record low46° (1965)
Tue, 0176° / 60°0.13
76 °
Terryville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.13 in
Chance of precipitation27%
Record high92° (2010)
Record low48° (1975)
Wed, 0276° / 59°0.16
76 °
Terryville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.16 in
Chance of precipitation30%
Record high93° (2010)
Record low47° (1991)
Thu, 0375° / 59°0.12
75 °
Terryville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.12 in
Chance of precipitation38%
Record high90° (2018)
Record low46° (1967)
Fri, 0476° / 60°0.11
76 °
Terryville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation25%
Record high91° (1973)
Record low48° (1987)
Sat, 0575° / 59°0.07
75 °
Terryville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation27%
Record high91° (2018)
Record low47° (1989)
Sun, 0675° / 59°0.22
75 °
Terryville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.22 in
Chance of precipitation32%
Record high93° (2018)
Record low46° (1989)
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 Terryville, CT 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 Terryville, CT 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.