select pnm,lnm,st_cd,st_nm,cnty_id,dm,dm_date,dm_hist,avg_tmax_data,avg_tmin_data,avg_prcp_data,rec_hi_data,rec_lo_data,avg_sndp_data,x,y,ff,lf,fd,hz,er,hz_source,kg,hzd,clim_stn_nm,hz12,hz90, feels_like_min,feels_like_max,days_of_prcp,snow,cloud_cover,humidity,wind_speed from worldtg8_pm.pm_climate_points_namer where surl = 'cornwall-bridge' and st_surl='connecticut' and iso_cc = 'US' and prim_loc in (1,2) Cornwall Bridge Connecticut Climate Data - Updated February 2026

Cornwall Bridge Connecticut Climate Data

Monthly Average Climate Data for Cornwall Bridge Connecticut

Switch Data to Celsius/Metric Units

Month	Avg. Low	Avg. High	Avg. Precip
January	15.1 °F	34.9 °F	3.22 in.
February	16.8 °F	38.0 °F	2.62 in.
March	24.6 °F	46.0 °F	3.51 in.
April	35.0 °F	59.6 °F	3.5 in.
May	45.6 °F	70.7 °F	3.77 in.
June	54.5 °F	78.6 °F	4.61 in.
July	60.0 °F	83.7 °F	4.73 in.
August	58.2 °F	81.8 °F	4.31 in.
September	50.8 °F	74.1 °F	4.49 in.
October	39.4 °F	62.3 °F	4.7 in.
November	29.7 °F	50.7 °F	3.35 in.
December	21.7 °F	39.5 °F	3.91 in.
Annual	37.6 °F	60 °F	46.72 in.

Climate Data for Cornwall Bridge Connecticut

Average First Frost Date	Oct. 1 - Oct. 10
Average Last Frost Date	May 1 - May 10
Average Days With Frost	100-125 Days
Plant Hardiness Zone	Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012	Zone 5b : -15°F to -10°F
Current Drought Conditions	Abnormally Dry
Köppen Climate Classification	Dfb - Humid Continental Mild Summer, Wet All Year

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