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 = 'calvin' and st_surl='oklahoma' and iso_cc = 'US' and prim_loc in (1,2) Calvin Oklahoma Climate Data - Updated February 2026

Calvin Oklahoma Climate Data

Monthly Average Climate Data for Calvin Oklahoma

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January27.8 °F51.2 °F1.96 in.
February31.5 °F55.1 °F2.05 in.
March40.0 °F64.0 °F3.21 in.
April48.2 °F72.5 °F4.27 in.
May58.5 °F79.4 °F5.72 in.
June67.1 °F87.9 °F4.62 in.
July70.5 °F93.1 °F3.69 in.
August69.1 °F93.6 °F3.09 in.
September61.4 °F86.3 °F4.06 in.
October49.8 °F74.8 °F3.81 in.
November39.3 °F63.5 °F2.87 in.
December30.4 °F53.0 °F2.79 in.
Annual49.5 °F72.9 °F42.14 in.

Climate Data for Calvin Oklahoma

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateMar. 21 - Mar. 31
Average Days With Frost40-50 Days
Plant Hardiness ZoneZone 7b : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7b : 5°F to 10°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
2026 plantmaps.com