Harrisburg, Pennsylvania, United States Climate Change Severity

52
High
The current climate change severity in Harrisburg is High, with a 16.4% worsening in the climate score compared to last 15 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Jun. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Harrisburg 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), Harrisburg temperature has changed by around +7.8%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
2524
-4%
cloudyCloudy
5137
-27.4%
rainyRainy
7061
-12.8%
snowySnowy
65
-16.6%
mistyMisty
01
100%

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

Climate Change Indicators:

Over the past 15 years, Harrisburg has experienced measurable shifts in key climate parameters, contributing to the current severity score of 52 (within the High severity category). This suggests worsening climate conditions from the previous years. 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, Harrisburg experienced significant changes:

Temperature change of

+0.6 °C

Variation in annual rainfall

+106.5 %

Change in average humidity

-7.2 %

PM2.5 levels surged by

+100 %

Heatwave changed by

+4.8 day(s)

Coldwave changed by

-1.6 day(s)

Wind speeds changed by

+2.1 km/h

These indicators show that Harrisburg is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.

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

Harrisburg Weather Forecast 30 Days (July - August 2025)
Harrisburg, Pennsylvania, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Thu. 31, Jul.
heavy rainHeavy rain
Temperature Icon30°/19°
Humidity Icon89%
Wind Icon25km/h
Fri. 1, Aug.
heavy rainHeavy rain
Temperature Icon19°/17°
Humidity Icon91%
Wind Icon18km/h
Sat. 2, Aug.
sunnySunny
Temperature Icon26°/14°
Humidity Icon72%
Wind Icon9km/h
Sun. 3, Aug.
sunnySunny
Temperature Icon27°/13°
Humidity Icon63%
Wind Icon10km/h
Mon. 4, Aug.
sunnySunny
Temperature Icon29°/15°
Humidity Icon68%
Wind Icon10km/h
Tue. 5, Aug.
sunnySunny
Temperature Icon28°/16°
Humidity Icon69%
Wind Icon14km/h
Wed. 6, Aug.
sunnySunny
Temperature Icon28°/16°
Humidity Icon73%
Wind Icon10km/h
Thu. 7, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/18°
Humidity Icon84%
Wind Icon18km/h
Fri. 8, Aug.
fogFog
Temperature Icon32°/21°
Humidity Icon76%
Wind Icon13km/h
Sat. 9, Aug.
moderate rainModerate rain
Temperature Icon32°/21°
Humidity Icon75%
Wind Icon9km/h
Sun. 10, Aug.
partly cloudyPartly Cloudy
Temperature Icon30°/21°
Humidity Icon81%
Wind Icon7km/h
Mon. 11, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon30°/21°
Humidity Icon85%
Wind Icon12km/h
Tue. 12, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/20°
Humidity Icon80%
Wind Icon20km/h
Wed. 13, Aug.
sunnySunny
Temperature Icon25°/15°
Humidity Icon56%
Wind Icon17km/h
Thu. 14, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/18°
Humidity Icon76%
Wind Icon13km/h
Fri. 15, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/18°
Humidity Icon79%
Wind Icon11km/h
Sat. 16, Aug.
moderate rain at timesModerate rain at times
Temperature Icon29°/18°
Humidity Icon76%
Wind Icon12km/h
Sun. 17, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/18°
Humidity Icon75%
Wind Icon12km/h
Mon. 18, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/18°
Humidity Icon78%
Wind Icon12km/h
Tue. 19, Aug.
heavy rain at timesHeavy rain at times
Temperature Icon28°/18°
Humidity Icon77%
Wind Icon11km/h
Wed. 20, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/18°
Humidity Icon76%
Wind Icon11km/h
Thu. 21, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon29°/18°
Humidity Icon79%
Wind Icon13km/h
Fri. 22, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/18°
Humidity Icon78%
Wind Icon13km/h
Sat. 23, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/17°
Humidity Icon76%
Wind Icon11km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/17°
Humidity Icon73%
Wind Icon11km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/17°
Humidity Icon74%
Wind Icon12km/h
Tue. 26, Aug.
heavy rain at timesHeavy rain at times
Temperature Icon29°/18°
Humidity Icon74%
Wind Icon12km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/18°
Humidity Icon77%
Wind Icon13km/h
Thu. 28, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/18°
Humidity Icon80%
Wind Icon14km/h
Fri. 29, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon28°/17°
Humidity Icon79%
Wind Icon12km/h
Sat. 30, Aug.
heavy rain at timesHeavy rain at times
Temperature Icon29°/17°
Humidity Icon74%
Wind Icon13km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 8, Aug.

31.9°C

Low will be onSun. 3, Aug.

12.7°C

HumidityHumidity

High will be onFri. 1, Aug.

91%

Low will be onWed. 13, Aug.

56%

Wind SpeedWind Speed

High will be onThu. 31, Jul.

25.2km/h

Low will be onSun. 10, Aug.

7.2km/h

PrecipitationPrecipitation

High will be onFri. 1, Aug.

56.8mm

Low will be onFri. 8, Aug.

0.03mm

Ultraviolet IndexUV

High will be onMon. 4, Aug.

6

Low will be onSun. 3, Aug.

0.1

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