As of 01:10 EDT

Weather in Stonington, CT

75°Current weather

Stonington, Sunday, 9 August, 01:10

Partly cloudy. Feels like 76°. High 92°, low 72°.

Pressure29.94 inHg
Wind4 mph W
Humidity87%
Visibility6.2 mi
Dew point71°

Monthly outlook for Stonington, CT: average high 79.1°, average low 64.7°. That is 0.1° above the climate normal for August. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (91.6°), the coolest 22 August (56.1°).

79.1°/64.7°
Average high / low
+0.1°
Above normal
4 / 5
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August80.2°79.5°+0.4°
19 August – 28 August77.3°78°-0.4°
29 August – 7 Septemberat normal76.5°

August records over 66 years

97.5°2 August 1975All-time high
50°29 August 1982All-time low

Climate normals and records are computed from the nearest reference point — Fishers Island (8 mi).

Mon, 1086° / 69°0Clear
86 °Clear

Stonington, Monday, 10 August

Clear. High 86°, low 69°.

Pressure29.97 inHg
Wind7 mph SW
Humidity44%
Visibility6.2 mi
Dew point57°
Tue, 1184° / 71°0Overcast
84 °Overcast

Stonington, Tuesday, 11 August

Overcast. High 84°, low 71°.

Pressure29.83 inHg
Wind10.5 mph W
Humidity49%
Visibility6.2 mi
Dew point61°
Wed, 1274° / 65°0.38Rain
74 °Rain

Stonington, Wednesday, 12 August

Rain. High 74°, low 65°.

Pressure29.71 inHg
Wind5.2 mph NW
Humidity78%
Visibility6.2 mi
Dew point66°
Thu, 1382° / 66°0.09Light rain
82 °Light rain

Stonington, Thursday, 13 August

Light rain. High 82°, low 66°.

Pressure29.71 inHg
Wind12.6 mph NW
Humidity66%
Visibility
Dew point63°
Fri, 1475° / 58°0Clear
75 °Clear

Stonington, Friday, 14 August

Clear. High 75°, low 58°.

Pressure29.97 inHg
Wind12.8 mph W
Humidity40%
Visibility
Dew point44°
Sat, 1579° / 60°0Clear
79 °Clear

Stonington, Saturday, 15 August

Clear. High 79°, low 60°.

Pressure30.03 inHg
Wind12.4 mph NW
Humidity46%
Visibility
Dew point49°
Sun, 1678° / 59°0Clear
78 °Clear

Stonington, Sunday, 16 August

Clear. High 78°, low 59°.

Pressure30.18 inHg
Wind9 mph SW
Humidity37%
Visibility
Dew point45°
Mon, 1776° / 65°0Overcast
76 °Overcast

Stonington, Monday, 17 August

Overcast. High 76°, low 65°.

Pressure30.18 inHg
Wind13.6 mph S
Humidity53%
Visibility
Dew point56°
Tue, 1876° / 67°0.02Light rain
76 °Light rain

Stonington, Tuesday, 18 August

Light rain. High 76°, low 67°.

Pressure30.15 inHg
Wind9.1 mph S
Humidity73%
Visibility
Dew point62°
Wed, 1976° / 64°0Overcast
76 °Overcast

Stonington, Wednesday, 19 August

Overcast. High 76°, low 64°.

Pressure30.00 inHg
Wind9.8 mph S
Humidity66%
Visibility
Dew point61°
Thu, 2076° / 67°0.62Rain
76 °Rain

Stonington, Thursday, 20 August

Rain. High 76°, low 67°.

Pressure29.68 inHg
Wind16.9 mph SW
Humidity92%
Visibility
Dew point67°
Fri, 2176° / 61°0Overcast
76 °Overcast

Stonington, Friday, 21 August

Overcast. High 76°, low 61°.

Pressure29.71 inHg
Wind17.3 mph NW
Humidity58%
Visibility
Dew point54°
Sat, 2276° / 56°0Clear
76 °Clear

Stonington, Saturday, 22 August

Clear. High 76°, low 56°.

Pressure30.03 inHg
Wind10.6 mph NW
Humidity34%
Visibility
Dew point39°
Sun, 2377° / 62°0Partly cloudy
77 °Partly cloudy

Stonington, Sunday, 23 August

Partly cloudy. High 77°, low 62°.

Pressure30.09 inHg
Wind16.5 mph S
Humidity52%
Visibility
Dew point55°
Mon, 2483° / 73°0.08Light rain
83 °Light rain

Stonington, Monday, 24 August

Light rain. High 83°, low 73°.

Pressure29.85 inHg
Wind17.3 mph SW
Humidity70%
Visibility
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 64°0.09Climate normal
78 °Climate normal

Stonington, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°
Average low64°
Average precipitation0.09 in
Chance of precipitation28%
Record high90° (1969)
Record low55° (1971)
Wed, 2678° / 65°0.09Climate normal
78 °Climate normal

Stonington, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high78°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high89° (1993)
Record low54° (1963)
Thu, 2779° / 66°0.11Climate normal
79 °Climate normal

Stonington, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high79°
Average low66°
Average precipitation0.11 in
Chance of precipitation28%
Record high88° (1993)
Record low55° (1969)
Fri, 2878° / 66°0.19Climate normal
78 °Climate normal

Stonington, Friday, 28 August

Climate normal for this date — 60-year average.

Average high78°
Average low66°
Average precipitation0.19 in
Chance of precipitation38%
Record high89° (1973)
Record low55° (2025)
Sat, 2977° / 65°0.17Climate normal
77 °Climate normal

Stonington, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high77°
Average low65°
Average precipitation0.17 in
Chance of precipitation37%
Record high88° (1973)
Record low50° (1982)
Sun, 3078° / 64°0.11Climate normal
78 °Climate normal

Stonington, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high78°
Average low64°
Average precipitation0.11 in
Chance of precipitation27%
Record high92° (1973)
Record low51° (1965)
Mon, 3178° / 64°0.05Climate normal
78 °Climate normal

Stonington, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°
Average low64°
Average precipitation0.05 in
Chance of precipitation25%
Record high92° (1973)
Record low51° (1965)
Tue, 0177° / 64°0.08Climate normal
77 °Climate normal

Stonington, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high77°
Average low64°
Average precipitation0.08 in
Chance of precipitation28%
Record high91° (1973)
Record low53° (2017)
Wed, 0276° / 63°0.22Climate normal
76 °Climate normal

Stonington, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°
Average low63°
Average precipitation0.22 in
Chance of precipitation32%
Record high91° (1966)
Record low49° (2017)
Thu, 0376° / 63°0.12Climate normal
76 °Climate normal

Stonington, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°
Average low63°
Average precipitation0.12 in
Chance of precipitation30%
Record high91° (2015)
Record low52° (1967)
Fri, 0477° / 63°0.13Climate normal
77 °Climate normal

Stonington, Friday, 4 September

Climate normal for this date — 60-year average.

Average high77°
Average low63°
Average precipitation0.13 in
Chance of precipitation32%
Record high88° (1973)
Record low53° (1997)
Sat, 0576° / 63°0.06Climate normal
76 °Climate normal

Stonington, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°
Average low63°
Average precipitation0.06 in
Chance of precipitation18%
Record high87° (1983)
Record low53° (1997)
Sun, 0675° / 63°0.15Climate normal
75 °Climate normal

Stonington, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°
Average low63°
Average precipitation0.15 in
Chance of precipitation33%
Record high87° (2023)
Record low52° (2000)
Mon, 0776° / 62°0.11Climate normal
76 °Climate normal

Stonington, Monday, 7 September

Climate normal for this date — 60-year average.

Average high76°
Average low62°
Average precipitation0.11 in
Chance of precipitation30%
Record high90° (1983)
Record low50° (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 Stonington, 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 Stonington, 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.