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South Britain, CT Weather Forecast | 5 Day

Updated: Sun Sep 20th 2026 9:45 PM EDT

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Light Rain Shower

Sun 9-20-26

Light Rain Shower with a high of 63°F and a low of 52°F. It will likey rain, having a 92% chance of a downpour with an estimated 0.46in. Winds will be light at 8mph and gusts of 15.5mph at 11 PM. High humidity with average of 94% is anticipated, the maximum being 99% at 11 PM and 99% being its lowest at 11 PM. Barometric pressure is its highest of 29.96^inHg at 11 PM, a lowest point of 29.96^inHg at 11 PM with an avg 29.96^inHg.

HI: 63°F
LO: 52°F

Rainfall: 92% | est. 0.46in
Snowfall: 0%

Wind
7.6 mph
Humidity
94% avg.

UV Index
0.6
Air Quality
Good

Sunrise
06:37 AM
Sunset
06:52 PM

Moonrise
04:13 PM
Moonset
12:25 AM
Moon Phase
Waxing Gibbous

Overcast

Weather Tomorrow, Mon 9-21-26

Overcast with a high of 67°F and a low of 54°F. There's a moderate 29% chance of rainfall with an estimated 0in. Wind will be moderate, blowing around 11mph on average and gusts of 28mph at 8 AM. The humidity will be on the higher side, averaging about 76%, the maximum being 99% at 12 AM and 50% being its lowest at 2 PM. Barometric pressure is its highest of 30.2^inHg at 11 PM, a lowest point of 29.97^inHg at 12 AM with an avg 30.08^inHg.

HI: 67°F
LO: 54°F

Rainfall: 29% | est. 0in
Snowfall: 0%

Wind
10.7 mph
Humidity
76% avg.

UV Index
5.5
Air Quality
Good

Sunrise
06:38 AM
Sunset
06:51 PM

Moonrise
04:44 PM
Moonset
01:28 AM
Moon Phase
Waxing Gibbous

Overcast

Tue 9-22-26

Overcast with a high of 56°F and a low of 48°F. It will likey rain, having a 83% chance of a downpour with an estimated 0.23in. Wind will be moderate, blowing around 12mph on average and gusts of 26.6mph at 11 PM. The humidity will be on the higher side, averaging about 80%, the maximum being 98% at 10 AM and 63% being its lowest at 7 PM. Barometric pressure is its highest of 30.41^inHg at 11 PM, a lowest point of 30.2^inHg at 12 AM with an avg 30.31^inHg.

HI: 56°F
LO: 48°F

Rainfall: 83% | est. 0.23in
Snowfall: 0%

Wind
11.2 mph
Humidity
80% avg.

UV Index
1.8
Air Quality
Good

Sunrise
06:39 AM
Sunset
06:49 PM

Moonrise
05:09 PM
Moonset
02:31 AM
Moon Phase
Waxing Gibbous

Overcast

Wed 9-23-26

Overcast with a high of 62°F and a low of 44°F. There might be light rainfall having a 16% chance with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 31.8mph at 8 AM. The humidity will be on the higher side, averaging about 71%, the maximum being 84% at 6 AM and 48% being its lowest at 3 PM. Barometric pressure is its highest of 30.46^inHg at 10 PM, a lowest point of 30.4^inHg at 4 PM with an avg 30.43^inHg.

HI: 62°F
LO: 44°F

Rainfall: 16% | est. 0in
Snowfall: 0%

Wind
13.9 mph
Humidity
71% avg.

UV Index
3.7
Air Quality
Good

Sunrise
06:40 AM
Sunset
06:47 PM

Moonrise
05:31 PM
Moonset
03:34 AM
Moon Phase
Waxing Gibbous

Overcast

Thu 9-24-26

Overcast with a high of 62°F and a low of 45°F. There might be light rainfall having a 16% chance. Wind will be moderate, blowing around 15mph on average and gusts of 35.6mph at 10 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 89% at 4 AM and 45% being its lowest at 10 PM. Barometric pressure is its highest of 30.43^inHg at 12 AM, a lowest point of 30.19^inHg at 11 PM with an avg 30.34^inHg.

HI: 62°F
LO: 45°F

Rainfall: 16%
Snowfall: 0%

Wind
14.8 mph
Humidity
67% avg.

UV Index
3.9
Air Quality
Good

Sunrise
06:41 AM
Sunset
06:46 PM

Moonrise
05:51 PM
Moonset
04:36 AM
Moon Phase
Full Moon

Light Rain Shower

Fri 9-25-26

Light Rain Shower with a high of 54°F and a low of 46°F. It will likey rain, having a 87% chance of a downpour with an estimated 0.55in. Winds will be strong at speeds peaking at 22mph and gusts of 47mph at 2 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 95% at 8 AM and 49% being its lowest at 4 AM. Barometric pressure is its highest of 30.16^inHg at 12 AM, a lowest point of 29.85^inHg at 11 PM with an avg 29.98^inHg.

HI: 54°F
LO: 46°F

Rainfall: 87% | est. 0.55in
Snowfall: 0%

Wind
21.3 mph
Humidity
78% avg.

UV Index
3
Air Quality
TBA

Sunrise
06:42 AM
Sunset
06:44 PM

Moonrise
06:10 PM
Moonset
05:38 AM
Moon Phase
Full Moon

South Britain, CT Weather Forecast - 10 Day Detailed

This 5-Day weather forecast is valid for ZIP code 06487, accurately covering the area of South Britain, CT.

Currently

	63°F	29.95 inHg. Barometer 100% Humidity NNE 3.6 mph Wind
Light Rain Shower

Full Report

National Outlook

Heavy Rain and Storms to Hit the Midwest, Ohio Valley, and Mid-Atlantic - 09-20 to 09-22

Sun Sep 20th 2026, 8:18am PDT

Read

Floods in the Southern High Plains and Storms in the East 09-23 to 09-27

Extended Forecast
Sun Sep 20th 2026, 8:19am PDT

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5 Day Forecast Nearby

Connecticut

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