Helena, Montana, United States Climate Change Severity

62
Very High
The current climate change severity in Helena is Very High, with a 11.4% 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 Feb. (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 -75.9%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
78
14.2%
cloudyCloudy
1918
-5.2%
rainyRainy
170
-100%
snowySnowy
42
-50%
mistyMisty
03
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 62 (within the Very High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

62/100

Very High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Helena experienced significant changes:

Temperature change of

+5 °C

Variation in annual rainfall

-57.6 %

Change in average humidity

-19.8 %

PM2.5 levels surged by

+100 %

Heatwave changed by

+5.7 day(s)

Coldwave changed by

-4.3 day(s)

Wind speeds changed by

-0.7 km/h

These indicators show a dramatic increase in volatility and worsening conditions. Helena's Very High severity status requires urgent and immediate adaptation and mitigation strategies, particularly focused on managing extreme weather events, improving air quality, and ensuring water resources are adequate for the population.

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

Helena Weather Forecast 30 Days (March - April 2026)
Helena, Montana, United States

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Tue. 10, Mar.
light freezing rainLight freezing rain
Temperature Icon2°/-8°
Humidity Icon42%
Wind Icon29.5km/h
Wed. 11, Mar.
sunnySunny
Temperature Icon6°/-8°
Humidity Icon54%
Wind Icon35.6km/h
Thu. 12, Mar.
partly cloudyPartly Cloudy
Temperature Icon6°/-1°
Humidity Icon74%
Wind Icon42.5km/h
Fri. 13, Mar.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/-1°
Humidity Icon61%
Wind Icon42.1km/h
Sat. 14, Mar.
patchy rain possiblePatchy rain nearby
Temperature Icon8°/-8°
Humidity Icon73%
Wind Icon39.2km/h
Sun. 15, Mar.
light freezing rainLight freezing rain
Temperature Icon1°/-9°
Humidity Icon68%
Wind Icon11.5km/h
Mon. 16, Mar.
patchy rain possiblePatchy rain nearby
Temperature Icon8°/-2°
Humidity Icon87%
Wind Icon8.3km/h
Tue. 17, Mar.
partly cloudyPartly Cloudy
Temperature Icon12°/2°
Humidity Icon74%
Wind Icon15.1km/h
Wed. 18, Mar.
sunnySunny
Temperature Icon14°/3°
Humidity Icon67%
Wind Icon22.3km/h
Thu. 19, Mar.
sunnySunny
Temperature Icon19°/5°
Humidity Icon53%
Wind Icon25.2km/h
Fri. 20, Mar.
sunnySunny
Temperature Icon17°/6°
Humidity Icon46%
Wind Icon20.2km/h
Sat. 21, Mar.
partly cloudyPartly Cloudy
Temperature Icon17°/6°
Humidity Icon48%
Wind Icon25.2km/h
Sun. 22, Mar.
sunnySunny
Temperature Icon15°/3°
Humidity Icon48%
Wind Icon22km/h
Mon. 23, Mar.
overcastOvercast
Temperature Icon11°/1°
Humidity Icon53%
Wind Icon11.9km/h
Wed. 25, Mar.
heavy rain at timesHeavy rain at times
Temperature Icon7°/-4°
Humidity Icon71%
Wind Icon13.3km/h
Thu. 26, Mar.
moderate rain at timesModerate rain at times
Temperature Icon7°/-4°
Humidity Icon72%
Wind Icon16.2km/h
Fri. 27, Mar.
moderate rain at timesModerate rain at times
Temperature Icon9°/-3°
Humidity Icon72%
Wind Icon15.1km/h
Sat. 28, Mar.
heavy rain at timesHeavy rain at times
Temperature Icon9°/-1°
Humidity Icon70%
Wind Icon17.6km/h
Sun. 29, Mar.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/-3°
Humidity Icon75%
Wind Icon19.1km/h
Mon. 30, Mar.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/-3°
Humidity Icon75%
Wind Icon17.6km/h
Tue. 31, Mar.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/-3°
Humidity Icon74%
Wind Icon17.3km/h
Wed. 1, Apr.
heavy rain at timesHeavy rain at times
Temperature Icon8°/-3°
Humidity Icon70%
Wind Icon16.2km/h
Thu. 2, Apr.
moderate rain at timesModerate rain at times
Temperature Icon8°/-4°
Humidity Icon69%
Wind Icon17.6km/h
Sun. 5, Apr.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/-3°
Humidity Icon70%
Wind Icon18km/h
Mon. 6, Apr.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon8°/-3°
Humidity Icon72%
Wind Icon19.1km/h
Tue. 7, Apr.
heavy rain at timesHeavy rain at times
Temperature Icon10°/-3°
Humidity Icon69%
Wind Icon18km/h
Wed. 8, Apr.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/-2°
Humidity Icon70%
Wind Icon18.7km/h
Thu. 9, Apr.
heavy rain at timesHeavy rain at times
Temperature Icon9°/-2°
Humidity Icon68%
Wind Icon18.4km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onThu. 19, Mar.

19°C

Low will be onSun. 15, Mar.

-9°C

HumidityHumidity

High will be onMon. 16, Mar.

87%

Low will be onTue. 10, Mar.

42%

Wind SpeedWind Speed

High will be onThu. 12, Mar.

42.5km/h

Low will be onMon. 16, Mar.

8.3km/h

PrecipitationPrecipitation

High will be onSat. 14, Mar.

5.8mm

Low will be onTue. 17, Mar.

0.01mm

Ultraviolet IndexUV

High will be onThu. 19, Mar.

4

Low will be onSat. 14, Mar.

1

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