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 = 'prospect' and st_surl='connecticut' and iso_cc = 'US' and prim_loc in (1,2) Prospect Connecticut Climate Data - Updated February 2026

Prospect Connecticut Climate Data

Monthly Average Climate Data for Prospect Connecticut

Switch Data to Celsius/Metric Units

Month	Avg. Low	Avg. High	Avg. Precip
January	17.3 °F	34.6 °F	4.08 in.
February	18.9 °F	37.3 °F	3.53 in.
March	26.4 °F	45.2 °F	5.13 in.
April	36.7 °F	58.3 °F	4.37 in.
May	46.8 °F	69.2 °F	4.52 in.
June	56.0 °F	77.4 °F	4.6 in.
July	61.2 °F	82.2 °F	4.4 in.
August	59.9 °F	80.4 °F	4.28 in.
September	52.8 °F	73.4 °F	4.76 in.
October	41.8 °F	61.7 °F	5.63 in.
November	32.3 °F	50.2 °F	4.4 in.
December	23.3 °F	39.4 °F	4.75 in.
Annual	39.5 °F	59.1 °F	54.45 in.

Climate Data for Prospect Connecticut

Average First Frost Date	Oct. 11 - Oct. 20
Average Last Frost Date	Apr. 21 - Apr. 30
Average Days With Frost	100-125 Days
Plant Hardiness Zone	Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012	Zone 6b : -5°F to 0°F
Current Drought Conditions	Moderate Drought
Köppen Climate Classification	Dfa - Humid Continental Hot Summers With Year Around Precipitation

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