Ten-day forecast for Hermiston: +9° to +25°, with rain expected on 1 day. The table below breaks each day down by time of day — morning, afternoon, evening and night.
+25°
Best day: 13 August, Thursday
+18° · 1.9 mm
Worst day: 16 August, Sunday
Tap any day below to see the weather morning, afternoon, evening and night.
Sun, 09+12 ° /19 °0.7
Morning+16°feels +16°
Afternoon+18°feels +18°
Evening+15°feels +15°
Night+15°feels +15°
+19 °
Hermiston, Sunday, 9 August
Light rain. High 19°C, low 12°C.
Pressure1011 mb
Wind13 mph SW
Humidity83%
Visibility6.2 mi
Dew point12°C
Mon, 10+9 ° /20 °0
Morning+11°feels +11°
Afternoon+19°feels +18°
Evening+16°feels +16°
Night+11°feels +10°
+20 °
Hermiston, Monday, 10 August
Partly cloudy. High 20°C, low 9°C.
Pressure1020 mb
Wind5 mph W
Humidity57%
Visibility6.2 mi
Dew point8°C
Tue, 11+10 ° /20 °0
Morning+12°feels +12°
Afternoon+19°feels +19°
Evening+16°feels +16°
Night+11°feels +10°
+20 °
Hermiston, Tuesday, 11 August
Overcast. High 20°C, low 10°C.
Pressure1025 mb
Wind4 mph NE
Humidity64%
Visibility6.2 mi
Dew point10°C
Wed, 12+14 ° /24 °0
Morning+18°feels +17°
Afternoon+24°feels +24°
Evening+22°feels +21°
Night+15°feels +14°
+24 °
Hermiston, Wednesday, 12 August
Partly cloudy. High 24°C, low 14°C.
Pressure1020 mb
Wind12 mph SW
Humidity52%
Visibility6.2 mi
Dew point13°C
Thu, 13+16 ° /25 °0
Morning+18°feels +18°
Afternoon+24°feels +24°
Evening+21°feels +21°
Night+18°feels +18°
+25 °
Hermiston, Thursday, 13 August
Mainly clear. High 25°C, low 16°C.
Pressure1017 mb
Wind14 mph W
Humidity57%
Visibility—
Dew point15°C
Fri, 14+15 ° /21 °0.9
Morning+17°feels +17°
Afternoon+20°feels +20°
Evening+18°feels +18°
Night+15°feels +15°
+21 °
Hermiston, Friday, 14 August
Light rain. High 21°C, low 15°C.
Pressure1016 mb
Wind4 mph SW
Humidity67%
Visibility—
Dew point14°C
Sat, 15+15 ° /18 °0.1
Morning+15°feels +15°
Afternoon+17°feels +17°
Evening+16°feels +15°
Night+15°feels +15°
+18 °
Hermiston, Saturday, 15 August
Light rain. High 18°C, low 15°C.
Pressure1018 mb
Wind6 mph NE
Humidity78%
Visibility—
Dew point13°C
Sun, 16+13 ° /18 °1.9
Morning+16°feels +16°
Afternoon+17°feels +17°
Evening+13°feels +13°
Night+13°feels +13°
+18 °
Hermiston, Sunday, 16 August
Light rain. High 18°C, low 13°C.
Pressure1013 mb
Wind5 mph SW
Humidity66%
Visibility—
Dew point11°C
Mon, 17+11 ° /19 °0.2
Morning+14°feels +14°
Afternoon+19°feels +19°
Evening+16°feels +16°
Night+13°feels +12°
+19 °
Hermiston, Monday, 17 August
Light rain. High 19°C, low 11°C.
Pressure1010 mb
Wind12 mph W
Humidity60%
Visibility—
Dew point11°C
Forecast questions
How accurate is a 10-day forecast?
The first 3–5 days are the most dependable — usually within 1–2 degrees. From day 6 to 10 the models show the trend: the direction of change is right more often than the exact figures.
What does the time-of-day table show?
Temperature in Hermiston at around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime temperature against expected rainfall: a warm, dry day scores highest.