Greeley, Colorado, United States Climate Change Severity

62
Very High
The current climate change severity in Greeley is Very High, with a 35.9% 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
°C (c)

Greeley 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), Greeley temperature has changed by around -3.07%, 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
7454
-27.02%
cloudyCloudy
8859
-32.9%
rainyRainy
8349
-40.9%
snowySnowy
41
-75%
mistyMisty
014
100%

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

Climate Change Indicators:

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

Temperature change of

-0.3 °C

Variation in annual rainfall

+55.2 %

Change in average humidity

+12.07 %

PM2.5 levels surged by

-27.6 %

Heatwave changed by

-5.6 day(s)

Coldwave changed by

-3.4 day(s)

Wind speeds changed by

+3.5 km/h

These indicators show a dramatic increase in volatility and worsening conditions. Greeley'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 Sep.

Greeley Weather Forecast 30 Days (October - November 2025)
Greeley, Colorado, United States

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Wed. 29, Oct.
sunnySunny
Temperature Icon15°/-8°
Humidity Icon40%
Wind Icon14km/h
Thu. 30, Oct.
sunnySunny
Temperature Icon14°/-2°
Humidity Icon49%
Wind Icon18km/h
Fri. 31, Oct.
partly cloudyPartly Cloudy
Temperature Icon15°/-4°
Humidity Icon58%
Wind Icon11km/h
Sat. 1, Nov.
sunnySunny
Temperature Icon15°/-1°
Humidity Icon42%
Wind Icon13km/h
Sun. 2, Nov.
sunnySunny
Temperature Icon22°/4°
Humidity Icon35%
Wind Icon16km/h
Mon. 3, Nov.
sunnySunny
Temperature Icon21°/8°
Humidity Icon35%
Wind Icon18km/h
Tue. 4, Nov.
sunnySunny
Temperature Icon14°/2°
Humidity Icon36%
Wind Icon18km/h
Wed. 5, Nov.
sunnySunny
Temperature Icon18°/-1°
Humidity Icon51%
Wind Icon45km/h
Thu. 6, Nov.
light freezing rainLight freezing rain
Temperature Icon2°/-3°
Humidity Icon58%
Wind Icon19km/h
Fri. 7, Nov.
sunnySunny
Temperature Icon9°/-6°
Humidity Icon44%
Wind Icon9km/h
Sat. 8, Nov.
sunnySunny
Temperature Icon17°/1°
Humidity Icon34%
Wind Icon8km/h
Sun. 9, Nov.
sunnySunny
Temperature Icon19°/4°
Humidity Icon30%
Wind Icon10km/h
Mon. 10, Nov.
sunnySunny
Temperature Icon16°/7°
Humidity Icon32%
Wind Icon13km/h
Tue. 11, Nov.
sunnySunny
Temperature Icon17°/5°
Humidity Icon36%
Wind Icon9km/h
Wed. 12, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon9°/-4°
Humidity Icon55%
Wind Icon16km/h
Thu. 13, Nov.
moderate rain at timesModerate rain at times
Temperature Icon11°/-2°
Humidity Icon52%
Wind Icon16km/h
Fri. 14, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon11°/-2°
Humidity Icon54%
Wind Icon18km/h
Sat. 15, Nov.
moderate rain at timesModerate rain at times
Temperature Icon11°/-2°
Humidity Icon52%
Wind Icon16km/h
Sun. 16, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon13°/-1°
Humidity Icon50%
Wind Icon22km/h
Mon. 17, Nov.
moderate rain at timesModerate rain at times
Temperature Icon9°/-3°
Humidity Icon57%
Wind Icon20km/h
Tue. 18, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon11°/-3°
Humidity Icon53%
Wind Icon18km/h
Wed. 19, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon11°/-2°
Humidity Icon50%
Wind Icon16km/h
Thu. 20, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon11°/-2°
Humidity Icon50%
Wind Icon16km/h
Fri. 21, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon10°/-3°
Humidity Icon53%
Wind Icon15km/h
Sun. 23, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon10°/-2°
Humidity Icon51%
Wind Icon18km/h
Mon. 24, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon9°/-2°
Humidity Icon46%
Wind Icon23km/h
Tue. 25, Nov.
moderate rain at timesModerate rain at times
Temperature Icon9°/-4°
Humidity Icon51%
Wind Icon18km/h
Wed. 26, Nov.
moderate snowModerate snow
Temperature Icon8°/-5°
Humidity Icon56%
Wind Icon16km/h
Thu. 27, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon10°/-4°
Humidity Icon50%
Wind Icon14km/h
Fri. 28, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon9°/-3°
Humidity Icon53%
Wind Icon18km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 2, Nov.

22.3°C

Low will be onWed. 29, Oct.

-7.8°C

HumidityHumidity

High will be onFri. 31, Oct.

58%

Low will be onSun. 9, Nov.

30%

Wind SpeedWind Speed

High will be onWed. 5, Nov.

44.6km/h

Low will be onSat. 8, Nov.

7.6km/h

PrecipitationPrecipitation

High will be onMon. 24, Nov.

1.1mm

Low will be onWed. 5, Nov.

0.08mm

Ultraviolet IndexUV

High will be onMon. 3, Nov.

4

Low will be onThu. 6, Nov.

1

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