Portland, Maine, United States Climate Change Severity

48
High
The current climate change severity in Portland is High, with a 0.8% 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 Nov. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Portland 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), Portland temperature has changed by around -5.4%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
7160
-15.4%
cloudyCloudy
9062
-31.1%
rainyRainy
11672
-37.9%
snowySnowy
96
-33.3%
mistyMisty
018
100%

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

Climate Change Indicators:

Over the past 15 years, Portland 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, Portland experienced significant changes:

Temperature change of

-0.5 °C

Variation in annual rainfall

+48.7 %

Change in average humidity

+0.6 %

PM2.5 levels surged by

-9.6 %

Heatwave changed by

-5.06 day(s)

Coldwave changed by

-9.8 day(s)

Wind speeds changed by

+0.4 km/h

These indicators show that Portland 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 Nov.

Portland Weather Forecast 30 Days (December - January 2026)
Portland, Maine, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sun. 14, Dec.
light snowLight snow
Temperature Icon1°/-7°
Humidity Icon76%
Wind Icon30km/h
Mon. 15, Dec.
sunnySunny
Temperature Icon-1°/-8°
Humidity Icon67%
Wind Icon27km/h
Tue. 16, Dec.
partly cloudyPartly Cloudy
Temperature Icon2°/-4°
Humidity Icon73%
Wind Icon21km/h
Wed. 17, Dec.
partly cloudyPartly Cloudy
Temperature Icon5°/-1°
Humidity Icon69%
Wind Icon35km/h
Thu. 18, Dec.
patchy rain possiblePatchy rain nearby
Temperature Icon2°/-2°
Humidity Icon58%
Wind Icon43km/h
Fri. 19, Dec.
patchy rain possiblePatchy rain nearby
Temperature Icon8°/-1°
Humidity Icon71%
Wind Icon40km/h
Sat. 20, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon0°/-2°
Humidity Icon60%
Wind Icon28km/h
Sun. 21, Dec.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/1°
Humidity Icon88%
Wind Icon23km/h
Mon. 22, Dec.
sunnySunny
Temperature Icon-2°/-4°
Humidity Icon51%
Wind Icon25km/h
Tue. 23, Dec.
patchy rain possiblePatchy rain nearby
Temperature Icon6°/-3°
Humidity Icon75%
Wind Icon41km/h
Wed. 24, Dec.
sunnySunny
Temperature Icon-5°/-13°
Humidity Icon48%
Wind Icon34km/h
Thu. 25, Dec.
sunnySunny
Temperature Icon-7°/-12°
Humidity Icon45%
Wind Icon21km/h
Fri. 26, Dec.
heavy snowHeavy snow
Temperature Icon-4°/-7°
Humidity Icon83%
Wind Icon13km/h
Sat. 27, Dec.
partly cloudyPartly Cloudy
Temperature Icon-3°/-7°
Humidity Icon80%
Wind Icon20km/h
Sun. 28, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/-3°
Humidity Icon81%
Wind Icon23km/h
Mon. 29, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon1°/-5°
Humidity Icon78%
Wind Icon23km/h
Tue. 30, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon0°/-5°
Humidity Icon76%
Wind Icon21km/h
Wed. 31, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/-4°
Humidity Icon79%
Wind Icon19km/h
Thu. 1, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon1°/-4°
Humidity Icon79%
Wind Icon21km/h
Fri. 2, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon0°/-6°
Humidity Icon78%
Wind Icon22km/h
Sat. 3, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon0°/-6°
Humidity Icon75%
Wind Icon24km/h
Sun. 4, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon1°/-6°
Humidity Icon79%
Wind Icon23km/h
Mon. 5, Jan.
patchy moderate snowPatchy moderate snow
Temperature Icon0°/-6°
Humidity Icon75%
Wind Icon23km/h
Tue. 6, Jan.
moderate snowModerate snow
Temperature Icon-1°/-6°
Humidity Icon75%
Wind Icon21km/h
Wed. 7, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon-2°/-7°
Humidity Icon77%
Wind Icon23km/h
Thu. 8, Jan.
patchy moderate snowPatchy moderate snow
Temperature Icon-1°/-8°
Humidity Icon77%
Wind Icon22km/h
Fri. 9, Jan.
moderate snowModerate snow
Temperature Icon-1°/-7°
Humidity Icon77%
Wind Icon24km/h
Sat. 10, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon1°/-6°
Humidity Icon75%
Wind Icon26km/h
Sun. 11, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon1°/-5°
Humidity Icon76%
Wind Icon23km/h
Mon. 12, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-4°
Humidity Icon80%
Wind Icon23km/h
Tue. 13, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-6°
Humidity Icon79%
Wind Icon25km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 21, Dec.

9°C

Low will be onWed. 24, Dec.

-12.8°C

HumidityHumidity

High will be onSun. 21, Dec.

88%

Low will be onThu. 25, Dec.

45%

Wind SpeedWind Speed

High will be onThu. 18, Dec.

42.5km/h

Low will be onFri. 26, Dec.

13.3km/h

PrecipitationPrecipitation

High will be onMon. 29, Dec.

7mm

Low will be onSat. 27, Dec.

0.02mm

Ultraviolet IndexUV

High will be onSun. 21, Dec.

2

Low will be onFri. 19, Dec.

1

Our Blogs

6 Dec 2025

Delhi Records Over 2 Lakh Respiratory Illness Cases in 3 Years: The Air Crisis Turns Deadly

Delhi Records Over 2 Lakh Respiratory Illness Cases in 3 Years: The Air Crisis Turns Deadly
4 Dec 2025

Air Quality of Indian Metro Cities vs UK’s: Data Reveals Huge Exposure Gap

Air Quality of Indian Metro Cities vs UK’s: Data Reveals Huge Exposure Gap
29 Nov 2025

GRAP 4 in Mumbai: AQI 300+ Spikes Across the City’s Key Neighbourhoods

GRAP 4 in Mumbai: AQI 300+ Spikes Across the City’s Key Neighbourhoods
26 Nov 2025

Ethiopia Volcano Eruption: Did the Ash Cloud Affect Delhi’s Air Quality?

Ethiopia Volcano Eruption: Did the Ash Cloud Affect Delhi’s Air Quality?
21 Nov 2025

Tashkent’s Air Quality Takes a Sharp Turn: What This Week’s Trend Shows

Tashkent’s Air Quality Takes a Sharp Turn: What This Week’s Trend Shows
19 Nov 2025

Dust vs Smoke: Why Cleaning Your Home Doesn’t Clean Your Air

Dust vs Smoke: Why Cleaning Your Home Doesn’t Clean Your Air
18 Nov 2025

Is Delhi suitable for Morning Walks or Runs This November? A Data-Backed Breakdown

Is Delhi suitable for Morning Walks or Runs This November? A Data-Backed Breakdown
13 Nov 2025

Beyond the Smog: What’s Fueling India’s Air Crisis

Beyond the Smog: What’s Fueling India’s Air Crisis
10 Nov 2025

New Delhi’s October 2025 AQI: The Worst in Three Years

New Delhi’s October 2025 AQI: The Worst in Three Years
7 Nov 2025

Why Delhi No Longer Panics About Air Pollution

Why Delhi No Longer Panics About Air Pollution