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As of 00:04 EDT

Weather in Cornwall, CT

70°Current weather

Cornwall, Sunday, 9 August, 00:04

Clear. Feels like 71°. High 86°, low 67°.

Pressure29.94 inHg
Wind3.4 mph SW
Humidity93%
Visibility6.2 mi
Dew point68°
Mon, 1085° / 65°0.02Light rain
85 °Light rain

Cornwall, Monday, 10 August

Light rain. High 85°, low 65°.

Pressure29.97 inHg
Wind9.4 mph SW
Humidity46%
Visibility6.2 mi
Dew point60°
Tue, 1183° / 64°0.01Light rain
83 °Light rain

Cornwall, Tuesday, 11 August

Light rain. High 83°, low 64°.

Pressure29.85 inHg
Wind11.1 mph NW
Humidity47%
Visibility6.2 mi
Dew point57°
Wed, 1275° / 62°0.12Light rain
75 °Light rain

Cornwall, Wednesday, 12 August

Light rain. High 75°, low 62°.

Pressure29.77 inHg
Wind4.2 mph NE
Humidity91%
Visibility6.2 mi
Dew point60°
Thu, 1378° / 54°0.06Light rain
78 °Light rain

Cornwall, Thursday, 13 August

Light rain. High 78°, low 54°.

Pressure29.74 inHg
Wind12.4 mph NW
Humidity57%
Visibility—
Dew point56°
Fri, 1471° / 50°0Clear
71 °Clear

Cornwall, Friday, 14 August

Clear. High 71°, low 50°.

Pressure30.00 inHg
Wind9.7 mph NW
Humidity47%
Visibility—
Dew point44°
Sat, 1574° / 51°0Clear
74 °Clear

Cornwall, Saturday, 15 August

Clear. High 74°, low 51°.

Pressure30.09 inHg
Wind14.3 mph NW
Humidity53%
Visibility—
Dew point47°
Sun, 1674° / 49°0Mostly clear
74 °Mostly clear

Cornwall, Sunday, 16 August

Mostly clear. High 74°, low 49°.

Pressure30.21 inHg
Wind8.1 mph NW
Humidity43%
Visibility—
Dew point44°
Mon, 1778° / 54°0.12Light rain
78 °Light rain

Cornwall, Monday, 17 August

Light rain. High 78°, low 54°.

Pressure30.15 inHg
Wind7.1 mph S
Humidity50%
Visibility—
Dew point51°
Tue, 1871° / 60°0.39Rain
71 °Rain

Cornwall, Tuesday, 18 August

Rain. High 71°, low 60°.

Pressure30.15 inHg
Wind7.8 mph S
Humidity95%
Visibility—
Dew point64°
Wed, 1971° / 60°0.06Light rain
71 °Light rain

Cornwall, Wednesday, 19 August

Light rain. High 71°, low 60°.

Pressure30.00 inHg
Wind8.8 mph SW
Humidity82%
Visibility—
Dew point61°
Thu, 2079° / 58°1.36Heavy rain
79 °Heavy rain

Cornwall, Thursday, 20 August

Heavy rain. High 79°, low 58°.

Pressure29.65 inHg
Wind11.7 mph SW
Humidity99%
Visibility—
Dew point64°
Fri, 2172° / 54°0Overcast
72 °Overcast

Cornwall, Friday, 21 August

Overcast. High 72°, low 54°.

Pressure29.77 inHg
Wind14.5 mph NW
Humidity66%
Visibility—
Dew point52°
Sat, 2273° / 48°0Clear
73 °Clear

Cornwall, Saturday, 22 August

Clear. High 73°, low 48°.

Pressure30.06 inHg
Wind9.6 mph NW
Humidity39%
Visibility—
Dew point38°
Sun, 2373° / 53°0.01Light rain
73 °Light rain

Cornwall, Sunday, 23 August

Light rain. High 73°, low 53°.

Pressure30.06 inHg
Wind10 mph S
Humidity65%
Visibility—
Dew point51°
Mon, 2480° / 67°0.07Light rain
80 °Light rain

Cornwall, Monday, 24 August

Light rain. High 80°, low 67°.

Pressure29.88 inHg
Wind11.8 mph W
Humidity63%
Visibility—
Dew point60°

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 Cornwall, 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 Cornwall, 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.