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Weather in Boulder County for October 2025

Your guide to Boulder County weather in October - trends and predictions

    Snow Forecast ❄️

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

  • Temperatures

  • In general, the average temperature in Boulder County at the beginning of October is 25.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.7 °F by the end of October.

  • Rain 🌧️

  • Precipitation in Boulder County 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
38 %
Avg humidity

Boulder County Weather October

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Temperatures trend during October in Boulder County

See the weather trend as well as the moving average line

October weather day by day

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Date Weather Temperatures Rain Snow More
Oct. 1 Sunny
Sunny
22° /7° 0 mm 0 cm
Oct. 2 Sunny
Sunny
29° /15° 0 mm 0 cm
Oct. 3 Sunny
Sunny
23° /10° 0 mm 0 cm
Oct. 4 Sunny
Sunny
27° /8° 0 mm 0 cm
Oct. 5 Sunny
Sunny
27° /16° 0 mm 0 cm
Oct. 6 Sunny
Sunny
23° /8° 0 mm 0 cm
Oct. 7 Sunny
Sunny
25° /9° 0 mm 0 cm
Oct. 8 Partly cloudy
Partly cloudy
23° /10° 0 mm 0 cm
Oct. 9 Partly cloudy
Partly cloudy
26° /13° 0 mm 0 cm
Oct. 10 Sunny
Sunny
27° /13° 0 mm 0 cm
Oct. 11 Overcast
Overcast
22° /12° 0 mm 0 cm
Oct. 12 Cloudy
Cloudy
24° /10° 0 mm 0 cm
Oct. 13 Sunny
Sunny
19° /8° 0 mm 0 cm
Oct. 14 Sunny
Sunny
23° /7° 0 mm 0 cm
Oct. 15 Sunny
Sunny
22° /12° 0 mm 0 cm
Oct. 16 Thundery outbreaks possible
Thundery outbreaks possible
24° /10° 0 mm 0 cm
Oct. 17 Thundery outbreaks possible
Thundery outbreaks possible
19° /12° 0 mm 0 cm
Oct. 18 Thundery outbreaks possible
Thundery outbreaks possible
14° /4° 0 mm 0 cm
Oct. 19 Overcast
Overcast
9° /2° 0 mm 0 cm
Oct. 20 Thundery outbreaks possible
Thundery outbreaks possible
18° /7° 0 mm 0 cm
Oct. 21 Partly cloudy
Partly cloudy
18° /10° 0 mm 0 cm
Oct. 22 Partly cloudy
Partly cloudy
23° /11° 0 mm 0 cm
Oct. 23 Sunny
Sunny
22° /8° 0 mm 0 cm
Oct. 24 Sunny
Sunny
22° /7° 0 mm 0 cm
Oct. 25 Sunny
Sunny
17° /4° 0 mm 0 cm
Oct. 26 Sunny
Sunny
18° /8° 0 mm 0 cm
Oct. 27 Overcast
Overcast
19° /11° 0 mm 0 cm
Oct. 28 Overcast
Overcast
19° /11° 0 mm 0 cm
Oct. 29 Moderate or heavy rain shower
Moderate or heavy rain shower
11° /4° 16.7 mm 0 cm
Oct. 30 Moderate or heavy snow showers
Moderate or heavy snow showers
3° /0° 7.2 mm 5.2 cm
Oct. 31 Sunny
Sunny
9° /0° 0 mm 0 cm
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Important Notice
Our weather forecast for Boulder County 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 County forecast closer to your planned date for the most up-to-date weather information.

Boulder County in October - FAQ

What are the expected maximum and minimum temperatures in Boulder County 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 County during October?
In October, Boulder County 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 County in October 2025?
Boulder County typically sees 5.2 cm of snowfall during October.
What are the typical wind conditions in Boulder County during October?
The average wind speed in Boulder County during October is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

Boulder County snow forecast October 2025

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

October rainfall patterns in Boulder County

Explore the daily rainfall trends and prepare for Boulder Countys October weather 💧

UV exposure in Boulder County 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 County?

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

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