Discover Rocky Mountain National Park-Small Group Tour & Picnic
4.93,513 reviews8h
from €195
Check availabilityBest months
April, May, and October
Warmest month
July, 33°C
Wettest month
May, 76 mm
Denver weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 8°C / -7°C | 11 mm · 2 days | Cold |
| February | 9°C / -7°C | 17 mm · 2 days | Cold |
| March | 15°C / -2°C | 30 mm · 3 days | Fair |
| April | 18°C / 2°C | 40 mm · 4 days | Good |
| May | 22°C / 7°C | 76 mm · 6 days | Great |
| June | 31°C / 13°C | 43 mm · 4 days | Good |
| July | 33°C / 16°C | 51 mm · 4 days | Hot |
| August | 33°C / 15°C | 33 mm · 3 days | Hot |
| September | 28°C / 10°C | 30 mm · 3 days | Good |
| October | 20°C / 3°C | 26 mm · 3 days | Great |
| November | 14°C / -2°C | 13 mm · 2 days | Fair |
| December | 9°C / -7°C | 13 mm · 2 days | Cold |
Denver by season
Spring
A season of transition with mild, pleasant days, occasional rain showers, and late-season snow in the mountains. The city starts to bloom, and patio season begins.
- + Fewer crowds
- + Comfortable temperatures
- + Lower accommodation rates before peak season
- − Unpredictable weather (rain/snow mix)
- − Some high mountain trails may still be closed
Summer
Warm, sunny, and dry with long days. This is peak festival and outdoor activity season, though afternoon thunderstorms are common in the mountains.
- + All mountain roads and trails are open
- + Vibrant festival schedule
- + Perfect for hiking, biking, and river activities
- − Peak tourist crowds and highest prices
- − Possible afternoon heat in the city
Autumn
Arguably the best season, with crisp air, brilliant gold aspen colors in the mountains, and fewer crowds. Days are sunny and mild, nights are cool.
- + Stunning fall foliage in the mountains
- + Pleasant city temperatures
- + Great deals after summer peak
- − Weather becomes more variable, especially later in the season
- − Some seasonal attractions begin to close
Winter
Cold, dry, and sunny in the city, with heavy snow in the nearby mountains. A paradise for skiers and snowboarders, with a cozy urban atmosphere.
- + World-class skiing just 1-2 hours away
- + Beautiful cityscapes with snow
- + Indoor cultural scene thrives
- − Can be very cold, especially at night
- − I-70 mountain traffic to ski resorts can be heavy
Denver month by month
Denver in January
ColdIn January, Denver averages highs of 8°C and lows of -7°C, with about 2 rainy days and 11 mm of rain. It is cold, so pack warm layers.
Denver in February
ColdIn February, Denver averages highs of 9°C and lows of -7°C, with about 2 rainy days and 17 mm of rain. It is cold, so pack warm layers.
Denver in March
FairIn March, Denver averages highs of 15°C and lows of -2°C, with about 3 rainy days and 30 mm of rain. Expect mixed weather, with comfortable spells.
Denver in April
GoodIn April, Denver averages highs of 18°C and lows of 2°C, with about 4 rainy days and 40 mm of rain. It is a good month to visit.
Denver in May
GreatIn May, Denver averages highs of 22°C and lows of 7°C, with about 6 rainy days and 76 mm of rain. It is one of the most comfortable months for sightseeing.
Denver in June
GoodIn June, Denver averages highs of 31°C and lows of 13°C, with about 4 rainy days and 43 mm of rain. It is a good month to visit.
Denver in July
HotIn July, Denver averages highs of 33°C and lows of 16°C, with about 4 rainy days and 51 mm of rain. It is hot, so plan sightseeing for mornings and evenings.
Denver in August
HotIn August, Denver averages highs of 33°C and lows of 15°C, with about 3 rainy days and 33 mm of rain. It is hot, so plan sightseeing for mornings and evenings.
Denver in September
GoodIn September, Denver averages highs of 28°C and lows of 10°C, with about 3 rainy days and 30 mm of rain. It is a good month to visit.
Denver in October
GreatIn October, Denver averages highs of 20°C and lows of 3°C, with about 3 rainy days and 26 mm of rain. It is one of the most comfortable months for sightseeing.
Denver in November
FairIn November, Denver averages highs of 14°C and lows of -2°C, with about 2 rainy days and 13 mm of rain. Expect mixed weather, with comfortable spells.
Denver in December
ColdIn December, Denver averages highs of 9°C and lows of -7°C, with about 2 rainy days and 13 mm of rain. It is cold, so pack warm layers.
Top tours and experiences in Denver
The tours and tickets travellers book most, with ratings and reviews from Viator.
Small Group Tour of Pikes Peak and the Garden of the Gods from Denver
4.93,350 reviews8h
from €171
Check availability
All things to do in Denver →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Denver trip
Best time to visit Denver: FAQ
What is the best month to visit Denver?+
October is the most comfortable month on average, with highs of 20°C. May and April are close behind.
What is the rainiest month in Denver?+
May is the wettest month, with about 76 mm of rain.
How hot does Denver get?+
July is the warmest month, with average highs of 33°C and lows of 16°C. The coldest nights come in January, averaging -7°C.
Averages for 2006–2025 from the DENVER WATER DEPT weather station (2 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.