Shoreline Foundation, Connecticut Climate Averages

2415 Boston Post Road, Guilford, CT 6437
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Shoreline Foundation Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 36°F Lo 26°F Hi 38°F Lo 26°F Hi 45°F Lo 33°F Hi 55°F Lo 42°F Hi 65°F Lo 52°F Hi 74°F Lo 61°F Hi 81°F Lo 68°F Hi 80°F Lo 67°F Hi 73°F Lo 61°F Hi 62°F Lo 51°F Hi 51°F Lo 40°F Hi 42°F Lo 32°F
11 mph 10 mph 10 mph 10 mph 8 mph 7 mph 7 mph 7 mph 8 mph 10 mph 10 mph 11 mph
4.3 in 4.9 in 5.4 in 4.7 in 5.3 in 4.6 in 4.8 in 4.7 in 4.3 in 5.7 in 4.5 in 6.9 in
73% 76% 73% 72% 76% 76% 77% 75% 75% 75% 72% 75%
44% 48% 47% 46% 45% 39% 35% 34% 37% 41% 37% 47%
30.0 in 30.0 in 30.0 in 30.0 in 30.0 in 29.9 in 30.0 in 30.0 in 30.1 in 30.0 in 30.1 in 30.1 in
21 17 21 23 23 22 23 25 24 24 23 21
7 8 7 6 8 8 8 6 6 7 6 8
3 4 2 0 0 0 0 0 0 0 0 2
1 1 1 0 1 1 1 0 1 1 0 1
2 2 2 3 5 6 6 5 4 3 2 1
182 151 165 166 187 204 233 235 211 181 202 164
January
February
March
April
May
June
July
August
September
October
November
December
Hi 2°C Lo -3°C Hi 3°C Lo -3°C Hi 7°C Lo 1°C Hi 13°C Lo 6°C Hi 18°C Lo 11°C Hi 23°C Lo 16°C Hi 27°C Lo 20°C Hi 26°C Lo 19°C Hi 23°C Lo 16°C Hi 17°C Lo 11°C Hi 11°C Lo 4°C Hi 5°C Lo 0°C
17 km/h 16 km/h 17 km/h 16 km/h 13 km/h 12 km/h 11 km/h 11 km/h 13 km/h 15 km/h 17 km/h 17 km/h
110 mm 125 mm 136 mm 120 mm 134 mm 117 mm 122 mm 118 mm 109 mm 145 mm 114 mm 174 mm
73% 76% 73% 72% 76% 76% 77% 75% 75% 75% 72% 75%
44% 48% 47% 46% 45% 39% 35% 34% 37% 41% 37% 47%
1017 mb 1017 mb 1017 mb 1015 mb 1016 mb 1014 mb 1014 mb 1015 mb 1018 mb 1017 mb 1019 mb 1018 mb
21 17 21 23 23 22 23 25 24 24 23 21
7 8 7 6 8 8 8 6 6 7 6 8
3 4 2 0 0 0 0 0 0 0 0 2
1 1 1 0 1 1 1 0 1 1 0 1
2 2 2 3 5 6 6 5 4 3 2 1
182 151 165 166 187 204 233 235 211 181 202 164
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Pressure Average
Average Dry Days
Avg. Precip. Days
Avg. Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

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