Helena, Montana, United States Climate Change Severity

81
Extreme
The current climate change severity in Helena is Extreme, with a 70.5% worsening in the climate score compared to last 16 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Jul. (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Helena Weather Condition Changes (Historic Vs 2026)

2026
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2026

Over the past 16 year(s), Helena temperature has changed by around +60.6%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
4499
125%
cloudyCloudy
5532
-41.8%
rainyRainy
7932
-59.4%
snowySnowy
83
-62.5%
mistyMisty
05
100%

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

Climate Change Indicators:

Over the past 16 years, Helena has experienced measurable shifts in key climate parameters, contributing to the current severity score of 81 (within the Extreme severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

81/100

Extreme

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2026, Helena experienced significant changes:

Temperature change of

+3.35 °C

Variation in annual rainfall

-34.51 %

Change in average humidity

-19.8 %

PM2.5 levels surged by

-5.41 %

Heatwave changed by

+24 Days

Coldwave changed by

-7 Days

Wind speeds changed by

+2.28 km/h

These indicators show extreme climate changes, including key climate parametes. The Extreme severity score necessitates immediate action, including large-scale mitigation efforts, climate resilience strategies, and extensive disaster preparedness.

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

Helena Weather Forecast 30 Days (August - September 2026)
Helena, Montana, United States

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Thu. 13, Aug.
sunnySunny
Temperature Icon24°/13°
Humidity Icon72%
Wind Icon14.8km/h
Fri. 14, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/9°
Humidity Icon84%
Wind Icon13km/h
Sat. 15, Aug.
sunnySunny
Temperature Icon28°/8°
Humidity Icon70%
Wind Icon18.4km/h
Sun. 16, Aug.
sunnySunny
Temperature Icon31°/11°
Humidity Icon57%
Wind Icon35.6km/h
Mon. 17, Aug.
sunnySunny
Temperature Icon31°/12°
Humidity Icon53%
Wind Icon14.8km/h
Tue. 18, Aug.
sunnySunny
Temperature Icon31°/13°
Humidity Icon50%
Wind Icon12.2km/h
Wed. 19, Aug.
sunnySunny
Temperature Icon32°/14°
Humidity Icon48%
Wind Icon13km/h
Thu. 20, Aug.
sunnySunny
Temperature Icon30°/12°
Humidity Icon49%
Wind Icon10.4km/h
Fri. 21, Aug.
moderate rain at timesRain
Temperature Icon27°/12°
Humidity Icon47%
Wind Icon14.4km/h
Sat. 22, Aug.
moderate rain at timesRain
Temperature Icon26°/12°
Humidity Icon48%
Wind Icon15.1km/h
Sun. 23, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon26°/11°
Humidity Icon47%
Wind Icon16.9km/h
Mon. 24, Aug.
heavy rain at timesHeavy Rain
Temperature Icon25°/11°
Humidity Icon45%
Wind Icon15.2km/h
Tue. 25, Aug.
patchy rain possibleRain Possible
Temperature Icon26°/10°
Humidity Icon45%
Wind Icon11.5km/h
Wed. 26, Aug.
patchy rain possibleRain Possible
Temperature Icon27°/12°
Humidity Icon44%
Wind Icon13.8km/h
Thu. 27, Aug.
moderate rain at timesRain
Temperature Icon26°/12°
Humidity Icon42%
Wind Icon15.7km/h
Fri. 28, Aug.
heavy rain at timesHeavy Rain
Temperature Icon26°/11°
Humidity Icon43%
Wind Icon13.4km/h
Sat. 29, Aug.
moderate rain at timesRain
Temperature Icon27°/11°
Humidity Icon44%
Wind Icon13.9km/h
Sun. 30, Aug.
patchy rain possibleRain Possible
Temperature Icon26°/11°
Humidity Icon46%
Wind Icon15.3km/h
Mon. 31, Aug.
patchy rain possibleRain Possible
Temperature Icon25°/11°
Humidity Icon44%
Wind Icon14.5km/h
Tue. 1, Sep.
patchy rain possibleRain Possible
Temperature Icon26°/11°
Humidity Icon44%
Wind Icon15.9km/h
Wed. 2, Sep.
patchy rain possibleRain Possible
Temperature Icon27°/11°
Humidity Icon38%
Wind Icon16.3km/h
Thu. 3, Sep.
moderate rain at timesRain
Temperature Icon26°/11°
Humidity Icon43%
Wind Icon14.6km/h
Fri. 4, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon23°/10°
Humidity Icon49%
Wind Icon14.3km/h
Sat. 5, Sep.
heavy rain at timesHeavy Rain
Temperature Icon25°/10°
Humidity Icon45%
Wind Icon13.3km/h
Sun. 6, Sep.
moderate rain at timesRain
Temperature Icon25°/10°
Humidity Icon44%
Wind Icon12.9km/h
Mon. 7, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon24°/10°
Humidity Icon47%
Wind Icon14.3km/h
Tue. 8, Sep.
moderate rain at timesRain
Temperature Icon24°/9°
Humidity Icon47%
Wind Icon16.4km/h
Wed. 9, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon22°/9°
Humidity Icon51%
Wind Icon14.7km/h
Thu. 10, Sep.
patchy rain possibleRain Possible
Temperature Icon23°/9°
Humidity Icon50%
Wind Icon15.3km/h
Fri. 11, Sep.
moderate rain at timesRain
Temperature Icon22°/8°
Humidity Icon51%
Wind Icon15.4km/h
Sat. 12, Sep.
patchy rain possibleRain Possible
Temperature Icon22°/8°
Humidity Icon50%
Wind Icon13.4km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 19, Aug.

32°C

Low will be onSat. 15, Aug.

8°C

HumidityHumidity

High will be onFri. 14, Aug.

84%

Low will be onWed. 2, Sep.

38%

Wind SpeedWind Speed

High will be onSun. 16, Aug.

35.6km/h

Low will be onThu. 20, Aug.

10.4km/h

PrecipitationPrecipitation

High will be onFri. 14, Aug.

5.4mm

Low will be onWed. 19, Aug.

0.01mm

Ultraviolet IndexUV

High will be onMon. 17, Aug.

8

Low will be onFri. 11, Sep.

3

Our Blogs

See all blogs
World Top 10 Hottest Cities Are All in India Again - May 2026

World Top 10 Hottest Cities Are All in India Again - May 2026

Gyane Haobijam4 Jun 2026
Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

Gyane Haobijam2 Jun 2026
What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

AQI Team27 May 2026
World Top Hottest Cities Belong to India - April 2026

World Top Hottest Cities Belong to India - April 2026

AQI Team28 Apr 2026
Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Gyane Haobijam27 Mar 2026
Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Gyane Haobijam17 Mar 2026
Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Gyane Haobijam14 Feb 2026
Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

Navya12 Feb 2026
Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

Gyane Haobijam2 Feb 2026
Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Gyane Haobijam1 Feb 2026