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United States weather

Weather in Lake County, Colorado for September 2026

Your guide to Lake County weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Lake County during September is quite rare, with fewer than 2 snowy days on average.
    According to Lake County snow forecast for September 2026, 2 snowy days are expected until the end of the month. The closest date with snow is Tuesday, September 29.

    • Temperatures

  • So far, September 2026 in Lake County is slightly warmer than the historical average by 0.6 °F.

  • The forecast for the coming days of September 2026 predicts a temperature of 12.9 °F , which is warmer than usual.

  • In general, the average temperature in Lake County at the beginning of September is 17.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.7 °F by the end of September.

    • Rain 🌧️

  • Lake County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 197.7 mm.

    • More

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

Average dry days
20
Dry days
Average rainy days
9
Rainy days
Average snowy days
1
Snow days
Average temperatures
14°/4°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
58 %
Avg humidity

Lake County Weather September

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

Temperatures trend during September in Lake County

See the weather trend as well as the moving average line

September weather in Lake County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
Sept. 1 Thundery outbreaks possible
Thundery outbreaks possible
 18° /4° 0.1 mm 0 cm
Sept. 2 Partly cloudy
Partly cloudy
 17° /4° 0 mm 0 cm
Sept. 3 Sunny
Sunny
 17° /4° 0 mm 0 cm
Sept. 4 Sunny
Sunny
 19° /5° 0.2 mm 0 cm
Sept. 5 Light rain shower
Light rain shower
 17° /6° 3.1 mm 0 cm
Sept. 6 Patchy light rain with thunder
Patchy light rain with thunder
 18° /5° 5.1 mm 0 cm
Sept. 7 Sunny
Sunny
 16° /6° 0 mm 0 cm
Sept. 8 Sunny
Sunny
 17° /4° 0 mm 0 cm
Sept. 9 Thundery outbreaks possible
Thundery outbreaks possible
 18° /5° 0 mm 0 cm
Sept. 10 Thundery outbreaks possible
Thundery outbreaks possible
 18° /3° 7.2 mm 0 cm
Sept. 11 Light rain shower
Light rain shower
 17° /4° 14.7 mm 0 cm
Sept. 12 Light rain shower
Light rain shower
 16° /4° 10.5 mm 0 cm
Sept. 13 Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /2° 26.5 mm 0 cm
Sept. 14 Moderate or heavy snow showers
Moderate or heavy snow showers
 14° /4° 2.5 mm 0.5 cm
Sept. 15 Partly cloudy
Partly cloudy
 16° /2° 0.4 mm 0 cm
Sept. 16 Thundery outbreaks possible
Thundery outbreaks possible
 16° /5° 0.3 mm 0 cm
Sept. 17 Thundery outbreaks possible
Thundery outbreaks possible
 13° /4° 2.4 mm 0 cm
Sept. 18 Thundery outbreaks possible
Thundery outbreaks possible
 14° /2° 0.7 mm 0 cm
Sept. 19 Overcast
Overcast
 14° /2° 1 mm 0 cm
Sept. 20 Thundery outbreaks possible
Thundery outbreaks possible
 14° /3° 0.2 mm 0 cm
Sept. 21 Thundery outbreaks possible
Thundery outbreaks possible
 14° /2° 0 mm 0 cm
Sept. 22 Patchy light rain with thunder
Patchy light rain with thunder
 14° /1° 1.3 mm 0 cm
Sept. 23 Thundery outbreaks possible
Thundery outbreaks possible
 10° /2° 0.8 mm 0 cm
Sept. 24 Mist
Mist
 11° /1° 0.4 mm 0 cm
Sept. 25 Sunny
Sunny
 14° /3° 3 mm 0 cm
Sept. 26 Thundery outbreaks possible
Thundery outbreaks possible
 14° /2° 0.6 mm 0 cm
Sept. 27 Cloudy
Cloudy
 14° /2° 0.2 mm 0 cm
Sept. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /2° 13.7 mm 0 cm
Sept. 29 Overcast
Overcast
 10° /1° 1.7 mm 0.1 cm
Sept. 30 Patchy rain possible
Patchy rain possible
 10° /2° 0.9 mm 0.1 cm
Next
Important Notice
Our weather forecast for Lake County in September 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 Lake County forecast closer to your planned date for the most up-to-date weather information.
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Lake County in September - FAQ

What are the expected maximum and minimum temperatures in Lake County during September?
Prepare for cooler days with highs just around 14° and colder nights, dipping below 4°.

How much rainfall should be expected in Lake County during September?
Significant rainfall exceeding 197.7 mm is expected in Lake County during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Lake County in September 2026?
Lake County typically sees 0.9 cm of snowfall during September.

What are the typical wind conditions in Lake County during September?
The average wind speed in Lake County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

Lake County snow forecast September 2026

Track daily snowfall levels and discover Lake County’s snowy potential this September ❄️
On average, Lake County sees 1 snowy days during September, with approximately 0.9 cm of total snowfall.

September rainfall patterns in Lake County

Explore the daily rainfall trends and prepare for Lake Countys September weather 💧
Typically, Lake County has 9 rainy days in September with a total of 197.7 mm of rainfall.
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Leadville
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Location coordinates Where is Lake County?

Get accurate weather forecasts for Lake County, located at latitude 39.251 and longitude -106.293. Stay updated with localized weather information tailored for Lake County.

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