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As of 17:41 EDT

Weather in Groton, CT

84°Current weather

Groton, Saturday, 8 August, 17:41

Mostly clear. Feels like 91°. High 88°, low 71°.

Pressure29.88 inHg
Wind5 mph SW
Humidity73%
Visibility6.2 mi
Dew point74°
Sun, 0991° / 72°0Clear
91 °Clear

Groton, Sunday, 9 August

Clear. High 91°, low 72°.

Pressure29.91 inHg
Wind10.9 mph W
Humidity62%
Visibility6.2 mi
Dew point67°
Mon, 1081° / 70°0.01Light rain
81 °Light rain

Groton, Monday, 10 August

Light rain. High 81°, low 70°.

Pressure29.97 inHg
Wind6.6 mph SW
Humidity47%
Visibility6.2 mi
Dew point58°
Tue, 1185° / 71°0.04Light rain
85 °Light rain

Groton, Tuesday, 11 August

Light rain. High 85°, low 71°.

Pressure29.83 inHg
Wind10.1 mph W
Humidity50%
Visibility6.2 mi
Dew point62°
Wed, 1272° / 66°0.32Rain
72 °Rain

Groton, Wednesday, 12 August

Rain. High 72°, low 66°.

Pressure29.74 inHg
Wind9 mph NE
Humidity94%
Visibility6.2 mi
Dew point66°
Thu, 1380° / 64°0.06Light rain
80 °Light rain

Groton, Thursday, 13 August

Light rain. High 80°, low 64°.

Pressure29.74 inHg
Wind13.9 mph NW
Humidity79%
Visibility—
Dew point68°
Fri, 1474° / 61°0Overcast
74 °Overcast

Groton, Friday, 14 August

Overcast. High 74°, low 61°.

Pressure29.94 inHg
Wind11.2 mph NW
Humidity45%
Visibility—
Dew point46°
Sat, 1575° / 57°0Clear
75 °Clear

Groton, Saturday, 15 August

Clear. High 75°, low 57°.

Pressure30.12 inHg
Wind11.5 mph N
Humidity43%
Visibility—
Dew point46°
Sun, 1675° / 59°0Mostly clear
75 °Mostly clear

Groton, Sunday, 16 August

Mostly clear. High 75°, low 59°.

Pressure30.27 inHg
Wind9.5 mph N
Humidity37%
Visibility—
Dew point43°
Mon, 1776° / 64°0Overcast
76 °Overcast

Groton, Monday, 17 August

Overcast. High 76°, low 64°.

Pressure30.24 inHg
Wind13.9 mph S
Humidity55%
Visibility—
Dew point55°
Tue, 1874° / 71°0.7Rain
74 °Rain

Groton, Tuesday, 18 August

Rain. High 74°, low 71°.

Pressure30.03 inHg
Wind16.5 mph SW
Humidity86%
Visibility—
Dew point67°
Wed, 1978° / 67°0.13Light rain
78 °Light rain

Groton, Wednesday, 19 August

Light rain. High 78°, low 67°.

Pressure29.85 inHg
Wind7.6 mph W
Humidity65%
Visibility—
Dew point63°
Thu, 2073° / 66°0.08Light rain
73 °Light rain

Groton, Thursday, 20 August

Light rain. High 73°, low 66°.

Pressure29.97 inHg
Wind8.8 mph SE
Humidity74%
Visibility—
Dew point62°
Fri, 2171° / 67°1.01Rain
71 °Rain

Groton, Friday, 21 August

Rain. High 71°, low 67°.

Pressure30.00 inHg
Wind9.7 mph S
Humidity88%
Visibility—
Dew point67°
Sat, 2272° / 67°1.69Heavy rain
72 °Heavy rain

Groton, Saturday, 22 August

Heavy rain. High 72°, low 67°.

Pressure29.77 inHg
Wind13.6 mph S
Humidity89%
Visibility—
Dew point68°
Sun, 2370° / 57°0Clear
70 °Clear

Groton, Sunday, 23 August

Clear. High 70°, low 57°.

Pressure29.85 inHg
Wind19.7 mph NW
Humidity50%
Visibility—
Dew point45°

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 Groton, 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 Groton, 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.