Hermiston, Oregon, United States Climate Change Severity

52
High
The current climate change severity in Hermiston is High, with a 6.4% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Hermiston Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Hermiston temperature has changed by around -5.3%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
7048
-31.4%
cloudyCloudy
6551
-21.5%
rainyRainy
5341
-22.6%
snowySnowy
36
100%
mistyMisty
03
100%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Hermiston has experienced measurable shifts in key climate parameters, contributing to the current severity score of 52 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

52/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Hermiston experienced significant changes:

Temperature change of

-0.6 °C

Variation in annual rainfall

+38.7 %

Change in average humidity

+11.6 %

PM2.5 levels surged by

-6.008 %

Heatwave changed by

-6.6 day(s)

Coldwave changed by

-3.5 day(s)

Wind speeds changed by

+1.5 km/h

These indicators show improvement in key parametes of climate, but Hermiston remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

Check how we calculate Climate Change Severity
Based on data from Jan. to Jul.

Hermiston Weather Forecast 30 Days (August - September 2025)
Hermiston, Oregon, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sat. 23, Aug.
sunnySunny
Temperature Icon40°/16°
Humidity Icon27%
Wind Icon13km/h
Sun. 24, Aug.
sunnySunny
Temperature Icon42°/18°
Humidity Icon25%
Wind Icon10km/h
Mon. 25, Aug.
partly cloudyPartly Cloudy
Temperature Icon42°/20°
Humidity Icon25%
Wind Icon12km/h
Tue. 26, Aug.
cloudyCloudy
Temperature Icon38°/23°
Humidity Icon33%
Wind Icon13km/h
Wed. 27, Aug.
partly cloudyPartly Cloudy
Temperature Icon37°/25°
Humidity Icon29%
Wind Icon25km/h
Thu. 28, Aug.
sunnySunny
Temperature Icon35°/23°
Humidity Icon27%
Wind Icon26km/h
Fri. 29, Aug.
sunnySunny
Temperature Icon32°/22°
Humidity Icon27%
Wind Icon23km/h
Sat. 30, Aug.
sunnySunny
Temperature Icon33°/19°
Humidity Icon25%
Wind Icon14km/h
Sun. 31, Aug.
partly cloudyPartly Cloudy
Temperature Icon30°/17°
Humidity Icon35%
Wind Icon35km/h
Mon. 1, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon19°/15°
Humidity Icon59%
Wind Icon35km/h
Tue. 2, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon15°/13°
Humidity Icon72%
Wind Icon31km/h
Wed. 3, Sep.
sunnySunny
Temperature Icon24°/12°
Humidity Icon53%
Wind Icon18km/h
Thu. 4, Sep.
sunnySunny
Temperature Icon29°/15°
Humidity Icon46%
Wind Icon11km/h
Fri. 5, Sep.
sunnySunny
Temperature Icon30°/19°
Humidity Icon44%
Wind Icon16km/h
Sat. 6, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/16°
Humidity Icon40%
Wind Icon17km/h
Sun. 7, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon29°/16°
Humidity Icon39%
Wind Icon18km/h
Mon. 8, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/16°
Humidity Icon40%
Wind Icon17km/h
Tue. 9, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/15°
Humidity Icon39%
Wind Icon17km/h
Wed. 10, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/15°
Humidity Icon39%
Wind Icon17km/h
Thu. 11, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon28°/15°
Humidity Icon37%
Wind Icon14km/h
Sat. 13, Sep.
sunnySunny
Temperature Icon28°/15°
Humidity Icon38%
Wind Icon18km/h
Sun. 14, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon27°/14°
Humidity Icon38%
Wind Icon15km/h
Mon. 15, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon27°/14°
Humidity Icon39%
Wind Icon17km/h
Tue. 16, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon26°/14°
Humidity Icon40%
Wind Icon17km/h
Wed. 17, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon25°/14°
Humidity Icon45%
Wind Icon19km/h
Thu. 18, Sep.
moderate rain at timesModerate rain at times
Temperature Icon24°/14°
Humidity Icon50%
Wind Icon21km/h
Fri. 19, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon24°/13°
Humidity Icon50%
Wind Icon22km/h
Sat. 20, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon24°/13°
Humidity Icon47%
Wind Icon19km/h
Sun. 21, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon24°/12°
Humidity Icon46%
Wind Icon16km/h
Mon. 22, Sep.
patchy rain possiblePatchy rain possible
Temperature Icon24°/13°
Humidity Icon46%
Wind Icon18km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 24, Aug.

41.5°C

Low will be onWed. 3, Sep.

12.2°C

HumidityHumidity

High will be onTue. 2, Sep.

72%

Low will be onSun. 24, Aug.

25%

Wind SpeedWind Speed

High will be onSun. 31, Aug.

34.6km/h

Low will be onSun. 24, Aug.

10.4km/h

PrecipitationPrecipitation

High will be onTue. 2, Sep.

1.7mm

Low will be onWed. 27, Aug.

0.09mm

Ultraviolet IndexUV

High will be onThu. 28, Aug.

7

Low will be onTue. 2, Sep.

3

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