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 = 'la-grande' and st_surl='oregon' and iso_cc = 'US' and prim_loc in (1,2) La Grande Oregon Climate Data - Updated February 2026

La Grande Oregon Climate Data

Monthly Average Climate Data for La Grande Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.4 °F38.3 °F1.87 in.
February26.0 °F43.0 °F1.25 in.
March29.6 °F51.5 °F1.7 in.
April33.6 °F58.3 °F1.82 in.
May40.3 °F67.4 °F2.1 in.
June45.5 °F74.7 °F1.5 in.
July50.2 °F86.4 °F0.49 in.
August48.9 °F86.8 °F0.63 in.
September42.0 °F77.3 °F0.62 in.
October34.2 °F62.4 °F1.4 in.
November29.1 °F47.1 °F2.18 in.
December24.0 °F38.0 °F2.39 in.
Annual35.7 °F60.9 °F17.95 in.

Climate Data for La Grande Oregon

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost75-100 Days
Plant Hardiness ZoneZone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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