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Weather in Boulder, Colorado for October 2026

Your guide to Boulder weather in October - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Boulder during October is quite rare, with fewer than 2 snowy days on average.

    • Temperatures

  • In general, the average temperature in Boulder at the beginning of October is 22.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.9 °F by the end of October.

    • Rain 🌧️

  • Precipitation in Boulder during October is a rare event, with an average of fewer than 2 rainy days.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
1
Snow days
Average temperatures
20°/9°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
37 %
Avg humidity

Boulder Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
23°
2
Sunny
27°
3
Sunny
25°
4
Sunny
26°
5
Sunny
21°
6
Sunny
16°
7
Sunny
19°
8
Partly cloudy
23°
9
Partly cloudy
25°
10
Sunny
24°
11
Overcast
21°
12
Cloudy
22°
13
Sunny
17°
14
Sunny
20°
15
Sunny
22°
16
Thundery outbreaks possible
21°
17
Thundery outbreaks possible
18°
18
Thundery outbreaks possible
16°
19
Overcast
15°
20
Thundery outbreaks possible
16°
21
Partly cloudy
18°
22
Partly cloudy
21°
23
Sunny
17°
24
Sunny
18°
25
Sunny
17°
26
Sunny
19°
27
Overcast
17°
28
Overcast
14°
29
Moderate or heavy rain shower
13°
30
Moderate or heavy snow showers
8°
31
Sunny
9°

Temperatures trend during October in Boulder

See the weather trend as well as the moving average line

October weather in Boulder day by day

Click on a date for more information
September November
Date Weather Temperatures Rain Snow More
Oct. 1 Sunny
Sunny
 23° /10° 0 mm 0 cm
Oct. 2 Sunny
Sunny
 27° /14° 0 mm 0 cm
Oct. 3 Sunny
Sunny
 25° /12° 0 mm 0 cm
Oct. 4 Sunny
Sunny
 26° /9° 0 mm 0 cm
Oct. 5 Sunny
Sunny
 21° /10° 1.5 mm 0 cm
Oct. 6 Sunny
Sunny
 16° /6° 7.6 mm 0 cm
Oct. 7 Sunny
Sunny
 19° /7° 0 mm 0 cm
Oct. 8 Partly cloudy
Partly cloudy
 23° /8° 0 mm 0 cm
Oct. 9 Partly cloudy
Partly cloudy
 25° /10° 0 mm 0 cm
Oct. 10 Sunny
Sunny
 24° /12° 3.3 mm 0 cm
Oct. 11 Overcast
Overcast
 21° /11° 0 mm 0 cm
Oct. 12 Cloudy
Cloudy
 22° /10° 0 mm 0 cm
Oct. 13 Sunny
Sunny
 17° /6° 0 mm 0 cm
Oct. 14 Sunny
Sunny
 20° /5° 1.4 mm 0 cm
Oct. 15 Sunny
Sunny
 22° /8° 0 mm 0 cm
Oct. 16 Thundery outbreaks possible
Thundery outbreaks possible
 21° /8° 0 mm 0 cm
Oct. 17 Thundery outbreaks possible
Thundery outbreaks possible
 18° /9° 0 mm 0 cm
Oct. 18 Thundery outbreaks possible
Thundery outbreaks possible
 16° /5° 0 mm 0 cm
Oct. 19 Overcast
Overcast
 15° /3° 0 mm 0 cm
Oct. 20 Thundery outbreaks possible
Thundery outbreaks possible
 16° /5° 0 mm 0 cm
Oct. 21 Partly cloudy
Partly cloudy
 18° /7° 0 mm 0 cm
Oct. 22 Partly cloudy
Partly cloudy
 21° /7° 0 mm 0 cm
Oct. 23 Sunny
Sunny
 17° /8° 7.8 mm 0 cm
Oct. 24 Sunny
Sunny
 18° /7° 2.8 mm 0 cm
Oct. 25 Sunny
Sunny
 17° /4° 0 mm 0 cm
Oct. 26 Sunny
Sunny
 19° /9° 0 mm 0 cm
Oct. 27 Overcast
Overcast
 17° /8° 0 mm 0 cm
Oct. 28 Overcast
Overcast
 14° /5° 0 mm 0 cm
Oct. 29 Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /0° 8.4 mm 0 cm
Oct. 30 Moderate or heavy snow showers
Moderate or heavy snow showers
 8° /1° 3.6 mm 2.6 cm
Oct. 31 Sunny
Sunny
 9° /0° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Boulder in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Boulder forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Boulder in October - FAQ

What are the expected maximum and minimum temperatures in Boulder during October?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Boulder during October?
In October, Boulder can expect light to moderate rainfall, totaling 23.9 mm across approximately 1 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Boulder in October 2026?
Boulder typically sees 5.18 cm of snowfall during October.
What are the typical wind conditions in Boulder during October?
The average wind speed in Boulder during October is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

Boulder snow forecast October 2026

Track daily snowfall levels and discover Boulder’s snowy potential this October ❄️

October rainfall patterns in Boulder

Explore the daily rainfall trends and prepare for Boulders October weather 💧

UV exposure in Boulder during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️

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Location coordinates Where is Boulder?

Get accurate weather forecasts for Boulder, located at latitude 40.015 and longitude -105.271. Stay updated with localized weather information tailored for Boulder.

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