Boulder County (Boulder)
October
Weather in Boulder County for October 2025
Your guide to Boulder County weather in October - trends and predictions
Snowfall in Boulder County during October is quite rare, with fewer than 2 snowy days on average.
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.
Precipitation in Boulder County during October is a rare event, with an average of fewer than 2 rainy days.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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29
Dry days
1
Rainy days
1
Snow days
20°/9°
Temperatures
19 km/h
Avg max wind
38 %
Avg humidity
Boulder County Weather October
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  22° | 2 29° | 3 23° | 4 27° | |||
| 5 27° | 6 23° | 7 25° | 8  23° | 9 26° | 10 27° | 11  22° |
| 12  24° | 13 19° | 14 23° | 15 22° | 16  24° | 17 19° | 18 14° |
| 19 9° | 20 18° | 21 18° | 22 23° | 23 22° | 24 22° | 25 17° |
| 26 18° | 27 19° | 28 19° | 29  11° | 30  3° | 31 9° |
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Access Boulder County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
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 | 22° /7° | 0 mm | 0 cm | |
| Oct. 2 | Sunny | 29° /15° | 0 mm | 0 cm | |
| Oct. 3 | Sunny | 23° /10° | 0 mm | 0 cm | |
| Oct. 4 | Sunny | 27° /8° | 0 mm | 0 cm | |
| Oct. 5 | Sunny | 27° /16° | 0 mm | 0 cm | |
| Oct. 6 | Sunny | 23° /8° | 0 mm | 0 cm | |
| Oct. 7 | Sunny | 25° /9° | 0 mm | 0 cm | |
| Oct. 8 | Partly cloudy | 23° /10° | 0 mm | 0 cm | |
| Oct. 9 | Partly cloudy | 26° /13° | 0 mm | 0 cm | |
| Oct. 10 | Sunny | 27° /13° | 0 mm | 0 cm | |
| Oct. 11 | Overcast | 22° /12° | 0 mm | 0 cm | |
| Oct. 12 | Cloudy | 24° /10° | 0 mm | 0 cm | |
| Oct. 13 | Sunny | 19° /8° | 0 mm | 0 cm | |
| Oct. 14 | Sunny | 23° /7° | 0 mm | 0 cm | |
| Oct. 15 | Sunny | 22° /12° | 0 mm | 0 cm | |
| Oct. 16 | Thundery outbreaks possible | 24° /10° | 0 mm | 0 cm | |
| Oct. 17 | Thundery outbreaks possible | 19° /12° | 0 mm | 0 cm | |
| Oct. 18 | Thundery outbreaks possible | 14° /4° | 0 mm | 0 cm | |
| Oct. 19 | Overcast | 9° /2° | 0 mm | 0 cm | |
| Oct. 20 | Thundery outbreaks possible | 18° /7° | 0 mm | 0 cm | |
| Oct. 21 | Partly cloudy | 18° /10° | 0 mm | 0 cm | |
| Oct. 22 | Partly cloudy | 23° /11° | 0 mm | 0 cm | |
| Oct. 23 | Sunny | 22° /8° | 0 mm | 0 cm | |
| Oct. 24 | Sunny | 22° /7° | 0 mm | 0 cm | |
| Oct. 25 | Sunny | 17° /4° | 0 mm | 0 cm | |
| Oct. 26 | Sunny | 18° /8° | 0 mm | 0 cm | |
| Oct. 27 | Overcast | 19° /11° | 0 mm | 0 cm | |
| Oct. 28 | Overcast | 19° /11° | 0 mm | 0 cm | |
| Oct. 29 | Moderate or heavy rain shower | 11° /4° | 16.7 mm | 0 cm | |
| Oct. 30 | Moderate or heavy snow showers | 3° /0° | 7.2 mm | 5.2 cm | |
| Oct. 31 | 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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