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What is Sunnyside, WA, Weather Like in October?

During the month of October, Sunnyside, WA, has an average daytime high temperature of 64°F and an average overnight low temperature dropping to 35°F. Around 0.74 inches of precipitation is received during the month, with about 5.62 inches falling in a typical year. Snow is not common in Sunnyside, WA.

October 2025: Actual vs. Average Temperatures

Showing temperatures through today (October 26, 2025)
Actual High Average High Actual Low Average Low

Month Summary
Average High: 67.2 F (+1.9 vs avg)
Average Low: 42 F (+5.9 vs avg)

Nighttime temperatures were significantly above average.

Actual data from: PWS_MEARSRAPTORHAVEN

Sunnyside, WA Daily Weather Averages for October

Recorded at Sunnyside (usc00458207), 0.1 miles W of Sunnyside, WA
Day Avg Temps (°F) Precip (in) Snow (in) Degree Days (°F)
Low High Mean Month Year Month Year Heat Cool
10/1 40 F 72 F 56 F 0.02" 4.90" N/A N/A 9.2 F 0.1 F
10/2 40 F 71 F 56 F 0.04" 4.92" N/A N/A 9.6 F 0.1 F
10/3 40 F 71 F 55 F 0.06" 4.94" N/A N/A 10 F N/A
10/4 39 F 70 F 55 F 0.08" 4.96" N/A N/A 10.4 F N/A
10/5 39 F 70 F 54 F 0.10" 4.98" N/A N/A 10.8 F N/A
10/6 38 F 69 F 54 F 0.12" 5.00" N/A N/A 11.3 F N/A
10/7 38 F 69 F 53 F 0.14" 5.02" N/A N/A 11.7 F N/A
10/8 38 F 68 F 53 F 0.16" 5.04" N/A N/A 12.1 F N/A
10/9 37 F 68 F 52 F 0.19" 5.07" N/A N/A 12.6 F N/A
10/10 37 F 67 F 52 F 0.21" 5.09" N/A N/A 13 F N/A
10/11 37 F 66 F 52 F 0.23" 5.11" N/A N/A 13.5 F N/A
10/12 36 F 66 F 51 F 0.25" 5.13" N/A N/A 13.9 F N/A
10/13 36 F 65 F 51 F 0.27" 5.15" N/A N/A 14.4 F N/A
10/14 36 F 65 F 50 F 0.30" 5.18" N/A N/A 14.8 F N/A
10/15 35 F 64 F 50 F 0.32" 5.20" N/A N/A 15.2 F N/A
10/16 35 F 64 F 49 F 0.34" 5.22" N/A N/A 15.7 F N/A
10/17 35 F 63 F 49 F 0.37" 5.25" N/A N/A 16.1 F N/A
10/18 34 F 63 F 48 F 0.39" 5.27" N/A N/A 16.6 F N/A
10/19 34 F 62 F 48 F 0.42" 5.30" N/A N/A 17 F N/A
10/20 34 F 61 F 48 F 0.44" 5.32" N/A N/A 17.4 F N/A
10/21 34 F 61 F 47 F 0.47" 5.35" N/A N/A 17.9 F N/A
10/22 33 F 60 F 47 F 0.49" 5.37" N/A N/A 18.3 F N/A
10/23 33 F 60 F 46 F 0.52" 5.40" N/A N/A 18.7 F N/A
10/24 33 F 59 F 46 F 0.54" 5.42" N/A N/A 19.1 F N/A
10/25 32 F 59 F 46 F 0.57" 5.45" N/A N/A 19.5 F N/A
10/26 32 F 58 F 45 F 0.60" 5.48" N/A N/A 19.9 F N/A
10/27 32 F 58 F 45 F 0.63" 5.51" N/A N/A 20.3 F N/A
10/28 32 F 57 F 44 F 0.66" 5.54" N/A N/A 20.7 F N/A
10/29 31 F 57 F 44 F 0.68" 5.56" N/A N/A 21.1 F N/A
10/30 31 F 56 F 44 F 0.71" 5.59" N/A N/A 21.4 F N/A
10/31 31 F 56 F 43 F 0.74" 5.62" N/A N/A 21.8 F N/A
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