Colorado weather in October

In October, Colorado sees average daytime highs of 30°C and overnight lows near 20°C, with 127 mm of rain across 11.8 wet days and about 12.5 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 32% of the time in October, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of October to 12 h 48 min by month's end. Set against the rest of the year, October is Colorado's 8th-clearest and 3rd-windiest month. For the whole year in context, see Colorado's year-round climate.

Daytime high
30°
6th warmest
Overnight low
20°
7th coldest
Rainfall
127 mm
11.8 wet days
Daylight
12 h 30 min
6:57 AM – 7:29 PM
Cloud cover
60%
8th clearest
Wind
10 km/h
3rd windiest
Solar energy
5.84 kWh/m²
Travel score
4.7
out of 10

Colorado is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical October day in Colorado reaches about 30°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, October runs about 1°C warmer than September and on par with November.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12919
23019
33019
43019
53019
63019
73019
83019
93019
103020
113020
123020
133020
143020
153020
163020
173020
183020
193020
203020
213020
223020
233020
243020
253020
263020
273020
283020
293020
303020
313020

How October really feels in Colorado

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Colorado weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°19519.113.23.5
Feb31° / 22°14716.912.83.6
Mar31° / 22°10513.212.24.4
Apr29° / 20°63711.55.9
May26° / 17°807.110.97.3
Jun25° / 15°616.110.67.8
Jul25° / 15°434.810.78.0
Aug28° / 16°444.311.27.5
Sep29° / 18°91811.95.9
Oct30° / 20°12711.812.54.7
Nov31° / 21°12412.313.14.3
Dec31° / 22°15216.713.43.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35149
45149
55050
65050
75050
85050
95050
104951
114852
124852
134852
144753
154753
164654
174654
184456
194357
204258
214258
224258
234258
244159
254159
264159
274159
284060
294060
304060
314159

Chance of precipitation in October

Any precipitation

Colorado gets around 127 mm of rain over 11.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
935
1035
1135
1236
1336
1436
1536
1637
1737
1838
1939
2039
2140
2240
2341
2441
2541
2642
2742
2842
2942
3042
3142

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the muggy band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 50% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1132528313
2132428323
3122328334
4112329334
5112229345
6102129355
792029365
891929376
981830386
1081730396
1171730397
1271630407
1361630417
1461530428
1551430428
1651429439
1741329449
18413294510
19412284610
20312284611
21312284612
22311274612
23311274613
24311274513
25411274514
26410274415
27410274415
28410264316
29510264317
30510264217
31510264218

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 12 min at the start of October to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over October. Sunrise moves from 7:11 AM to 6:46 AM, and sunset from 7:23 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.27:117:23
212.27:107:23
312.37:097:24
412.37:087:24
512.37:077:25
612.37:067:25
712.37:057:25
812.47:047:26
912.47:037:26
1012.47:027:27
1112.47:017:27
1212.57:007:27
1312.56:597:28
1412.56:587:28
1512.56:587:29
1612.56:577:29
1712.66:567:30
1812.66:557:30
1912.66:547:30
2012.66:547:31
2112.66:537:31
2212.76:527:32
2312.76:517:32
2412.76:517:33
2512.76:507:33
2612.76:497:34
2712.86:497:35
2812.86:487:35
2912.86:477:36
3012.86:477:36
3112.86:467:37

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.84 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 6.23 kWh/m² in November across the year — October's 5.84 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
306.0Bright
316.0Bright
Planning a trip in October

Hazard calendar for Colorado

In seasonPeak

In October, Colorado sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Colorado's rainy season runs September–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Colorado?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.7
Sightseeing
7th-best month of the year
6.5
Beach & pool
7th-best month of the year

October is a reasonable time to visit Colorado for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Colorado in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Colorado sees daytime highs around 30°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Colorado in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Colorado peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 13 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 20UV 15Sep 13UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug7High
Sep4Moderate
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Colorado in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Colorado is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1620 µg/m³Dec 147 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr9Good
May10Good
Jun10Good
Jul10Good
Aug14Moderate
Sep20Moderate
Oct14Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Colorado?

Colorado sits at 22.8°S, 52.0°W, 444 m above sea level, in Brazil. The nearest listed city is Teodoro Sampaio, 39 km away.

Topography around Colorado

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Colorado.

Within 3 km, the terrain around Colorado has only modest variations in elevation — a maximum elevation change of 139 m around an average of 421 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 235 m; within 80 km, significant variations in elevation — a maximum elevation change of 551 m.

The land around Colorado is covered by grassland (38%) and cropland (38%) within 3 km, cropland (62%) and grassland (25%) within 16 km, and cropland (57%) and grassland (26%) within 80 km.

3 km
139 m
16 km
235 m
80 km
551 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Teodoro Sampaio 39 km · Nova Esperança 45 km · Astorga 54 km · Jaguapitã 55 km · Paranavaí 57 km · Mandaguaçu 58 km · Mirante do Paranapanema 61 km · Maringá 65 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Colorado (-22.8375°, -51.9731°, elevation 444 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).