Colorado weather in January

In January, Colorado sees average daytime highs of 31°C and overnight lows near 22°C, with 195 mm of rain across 19.1 wet days and about 13.2 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 19% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 24 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is Colorado's 12th-clearest and 11th-windiest month. For the whole year in context, see Colorado's year-round climate.

Daytime high
31°
1st warmest
Overnight low
22°
12th coldest
Rainfall
195 mm
19.1 wet days
Daylight
13 h 18 min
6:59 AM – 8:15 PM
Cloud cover
69%
12th clearest
Wind
8 km/h
11th windiest
Solar energy
5.84 kWh/m²
Travel score
3.5
out of 10

Colorado is human settlement in Brazil.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical January day in Colorado reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13122
23122
33122
43122
53122
63122
73122
83122
93122
103122
113122
123122
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How January really feels in Colorado

Once humidity and wind are folded in, January averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Colorado weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 1st-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23565
33565
43466
53466
63367
73268
83268
93268
103268
113268
123367
133367
143367
153367
163367
173367
183466
193565
203565
213565
223565
233565
243763
253763
263763
273862
283763
293862
303961
314060

Chance of precipitation in January

Any precipitation

Colorado gets around 195 mm of rain over 19.1 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 61% and peaks near 63% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
161
261
362
462
563
663
763
863
963
1062
1162
1262
1361
1461
1560
1660
1760
1859
1959
2059
2159
2260
2360
2460
2560
2661
2761
2861
2961
3061
3161

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
111028610
21928620
31928620
41828621
51828621
61729621
71729621
81730611
91630621
101630621
111631611
121631611
131631611
141632601
151732591
161732591
171731601
181831591
191831591
201931581
211930591
221930591
2311029591
2411029600
2511028610
2611028610
2701028620
2801027630
2901027621
300927631
310927631

Wind in January

Winds average 8 km/h in January.

Across January, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 24 min at the start of January to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over January. Sunrise moves from 6:50 AM to 7:10 AM, and sunset from 8:12 PM to 8:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:508:12
213.46:508:13
313.46:518:13
413.46:518:13
513.46:528:14
613.46:538:14
713.36:538:14
813.36:548:14
913.36:558:14
1013.36:558:14
1113.36:568:15
1213.36:578:15
1313.36:578:15
1413.36:588:15
1513.36:598:15
1613.36:598:15
1713.27:008:15
1813.27:018:15
1913.27:018:15
2013.27:028:15
2113.27:038:15
2213.27:038:15
2313.27:048:15
2413.27:058:14
2513.17:068:14
2613.17:068:14
2713.17:078:14
2813.17:088:14
2913.17:088:13
3013.17:098:13
3113.17:108:13

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, 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 — January's 5.84 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in January

Hazard calendar for Colorado

In seasonPeak

In January, 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 January a good time to visit Colorado?

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

3.5
Sightseeing
12th-best month of the year
5.2
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Colorado.

What to pack for Colorado in January

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

In January, Colorado sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Colorado in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).