Londonderry, New Hampshire, United States Climate Change Severity

48
High
The current climate change severity in Londonderry is High, with a 2.1% 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 Sep. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100


Londonderry Weather Condition Changes (Historic Vs 2025)

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

Over the past 15 year(s), Londonderry temperature has changed by around +3.1%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
4838
-20.8%

cloudyCloudy
7858
-25.6%

rainyRainy
10180
-20.7%

snowySnowy
99
0%

mistyMisty
011
100%

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

Climate Change Indicators:

Over the past 15 years, Londonderry has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (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

48/100


High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Londonderry experienced significant changes:

Temperature change of

+0.3 °C


Variation in annual rainfall

+68.1 %


Change in average humidity

-7.4 %


PM2.5 levels surged by

-8.5 %


Heatwave changed by

+0.6 day(s)


Coldwave changed by

-4.1 day(s)


Wind speeds changed by

+0.4 km/h


These indicators show that Londonderry 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 Sep.

Londonderry Weather Forecast 30 Days (October - November 2025)
Londonderry, New Hampshire, United States


Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Thu. 30, Oct.
moderate rainModerate rain

Temperature Icon9°/7°

Humidity Icon90%

Wind Icon22km/h
Fri. 31, Oct.
moderate rainModerate rain

Temperature Icon14°/8°

Humidity Icon85%

Wind Icon29km/h
Sat. 1, Nov.
partly cloudyPartly Cloudy

Temperature Icon10°/3°

Humidity Icon65%

Wind Icon32km/h
Sun. 2, Nov.
sunnySunny

Temperature Icon10°/1°

Humidity Icon63%

Wind Icon19km/h
Mon. 3, Nov.
sunnySunny

Temperature Icon13°/-1°

Humidity Icon69%

Wind Icon13km/h
Tue. 4, Nov.
moderate rainModerate rain

Temperature Icon15°/5°

Humidity Icon94%

Wind Icon23km/h
Wed. 5, Nov.
partly cloudyPartly Cloudy

Temperature Icon9°/5°

Humidity Icon68%

Wind Icon27km/h
Thu. 6, Nov.
sunnySunny

Temperature Icon11°/4°

Humidity Icon67%

Wind Icon19km/h
Fri. 7, Nov.
patchy rain possiblePatchy rain nearby

Temperature Icon16°/5°

Humidity Icon78%

Wind Icon31km/h
Sat. 8, Nov.
sunnySunny

Temperature Icon3°/-2°

Humidity Icon51%

Wind Icon24km/h
Sun. 9, Nov.
sunnySunny

Temperature Icon7°/-1°

Humidity Icon58%

Wind Icon16km/h
Mon. 10, Nov.
sunnySunny

Temperature Icon12°/0°

Humidity Icon60%

Wind Icon15km/h
Tue. 11, Nov.
sunnySunny

Temperature Icon14°/2°

Humidity Icon65%

Wind Icon9km/h
Wed. 12, Nov.
cloudyCloudy

Temperature Icon11°/3°

Humidity Icon82%

Wind Icon11km/h
Thu. 13, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon9°/1°

Humidity Icon68%

Wind Icon18km/h
Fri. 14, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon7°/0°

Humidity Icon68%

Wind Icon18km/h
Sat. 15, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon8°/1°

Humidity Icon70%

Wind Icon16km/h
Sun. 16, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon9°/2°

Humidity Icon74%

Wind Icon16km/h
Mon. 17, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon8°/0°

Humidity Icon75%

Wind Icon17km/h
Tue. 18, Nov.
heavy rain at timesHeavy rain at times

Temperature Icon8°/0°

Humidity Icon72%

Wind Icon17km/h
Wed. 19, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon8°/0°

Humidity Icon72%

Wind Icon17km/h
Thu. 20, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon7°/0°

Humidity Icon69%

Wind Icon18km/h
Fri. 21, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon7°/-1°

Humidity Icon69%

Wind Icon17km/h
Sun. 23, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon6°/-1°

Humidity Icon76%

Wind Icon20km/h
Mon. 24, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon6°/-2°

Humidity Icon71%

Wind Icon19km/h
Tue. 25, Nov.
moderate rain at timesModerate rain at times

Temperature Icon7°/-1°

Humidity Icon71%

Wind Icon16km/h
Wed. 26, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon7°/1°

Humidity Icon80%

Wind Icon17km/h
Thu. 27, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon7°/1°

Humidity Icon81%

Wind Icon20km/h
Fri. 28, Nov.
moderate or heavy rain showerModerate or heavy rain shower

Temperature Icon5°/-1°

Humidity Icon75%

Wind Icon19km/h
Sat. 29, Nov.
moderate rain at timesModerate rain at times

Temperature Icon6°/-2°

Humidity Icon72%

Wind Icon17km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onFri. 7, Nov.

16.2°C


Low will be onSat. 8, Nov.

-2.5°C

HumidityHumidity

High will be onTue. 4, Nov.

94%


Low will be onSat. 8, Nov.

51%

Wind SpeedWind Speed

High will be onSat. 1, Nov.

32km/h


Low will be onTue. 11, Nov.

9.4km/h

PrecipitationPrecipitation

High will be onFri. 31, Oct.

19.8mm


Low will be onWed. 5, Nov.

0.04mm

Ultraviolet IndexUV

High will be onTue. 4, Nov.

3


Low will be onFri. 14, Nov.

1