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 = 'castalia' and st_surl='ohio' and iso_cc = 'US' and prim_loc in (1,2) Castalia Ohio Climate Data - Updated February 2026

Castalia Ohio Climate Data

Monthly Average Climate Data for Castalia Ohio

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.4 °F33.2 °F2.61 in.
February20.9 °F36.0 °F2.18 in.
March28.6 °F45.1 °F2.77 in.
April39.4 °F57.8 °F3.92 in.
May51.1 °F69.3 °F3.78 in.
June61.2 °F78.6 °F4.08 in.
July64.8 °F82.6 °F3.86 in.
August63.4 °F80.8 °F3.48 in.
September56.3 °F74.9 °F3.45 in.
October44.9 °F63.2 °F3.14 in.
November34.5 °F49.5 °F2.85 in.
December25.6 °F38.2 °F2.79 in.
Annual42.5 °F59.1 °F38.91 in.

Climate Data for Castalia Ohio

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness ZoneZone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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