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United States weather

Weather in Lewis and Clark County, Montana for June 2026

Your guide to Lewis and Clark County weather in June - trends and predictions

    Temperatures

  • Until now, June 2026 in Lewis and Clark County is slightly cooler than the historical average by -0.8 °F.

  • The forecast for the upcoming days in Lewis and Clark County predicts a temperature of 24.8 °F, which is slightly above the historical average.

  • In general, the average temperature in Lewis and Clark County at the beginning of June is 19.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.3 °F by the end of June.

    • Rain 🌧️

  • With an average of 5 rainy days, Lewis and Clark County experiences minimal rainfall in June.

    • More

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

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/8°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
52 %
Avg humidity

Lewis and Clark County Weather June

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

Temperatures trend during June in Lewis and Clark County

See the weather trend as well as the moving average line

June weather in Lewis and Clark County day by day

Click on a date for more information
May July
Date Weather Temperatures Rain UV More
Jun. 1 Overcast
Overcast
 18° /7° 3.6 mm 7
Jun. 2 Thundery outbreaks possible
Thundery outbreaks possible
 14° /4° 3 mm 7
Jun. 3 Partly cloudy
Partly cloudy
 19° /3° 0 mm 8
Jun. 4 Overcast
Overcast
 20° /6° 0.4 mm 7
Jun. 5 Sunny
Sunny
 23° /5° 0 mm 8
Jun. 6 Sunny
Sunny
 24° /8° 1.3 mm 9
Jun. 7 Sunny
Sunny
 18° /7° 0.4 mm 9
Jun. 8 Partly cloudy
Partly cloudy
 23° /5° 0 mm 8
Jun. 9 Sunny
Sunny
 24° /9° 0.4 mm 9
Jun. 10 Sunny
Sunny
 21° /10° 0.2 mm 9
Jun. 11 Overcast
Overcast
 22° /10° 0 mm 8
Jun. 12 Partly cloudy
Partly cloudy
 23° /8° 0.8 mm 9
Jun. 13 Moderate rain
Moderate rain
 20° /9° 11.6 mm 8
Jun. 14 Sunny
Sunny
 25° /5° 0 mm 8.2
Jun. 15 Sunny
Sunny
 26° /6° 0 mm 7.8
Jun. 16 Sunny
Sunny
 28° /11° 0 mm 9.8
Jun. 17 Sunny
Sunny
 21° /7° 0 mm 9.4
Jun. 18 Sunny
Sunny
 27° /6° 0 mm 0
Jun. 19 Patchy rain possible
Patchy rain possible
 26° /9° 0.5 mm 4
Jun. 20 Patchy rain possible
Patchy rain possible
 22° /10° 0.1 mm 4
Jun. 21 Partly cloudy
Partly cloudy
 24° /7° 0 mm 5
Jun. 22 Moderate rain
Moderate rain
 27° /9° 15.6 mm 4
Jun. 23 Patchy rain possible
Patchy rain possible
 26° /10° 2.2 mm 4
Jun. 24 Patchy rain possible
Patchy rain possible
 28° /10° 1.1 mm 4
Jun. 25 Moderate rain
Moderate rain
 20° /11° 8.5 mm 3
Jun. 26 Sunny
Sunny
 24° /6° 0 mm 4
Jun. 27 Sunny
Sunny
 23° /9° 0 mm 5
Jun. 28 Partly cloudy
Partly cloudy
 24° /9° 0 mm 6
Jun. 29 Sunny
Sunny
 24° /8° 0 mm 6
Jun. 30 Sunny
Sunny
 27° /10° 0 mm 7
Next
Important Notice
Our weather forecast for Lewis and Clark County in June 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 Lewis and Clark County forecast closer to your planned date for the most up-to-date weather information.
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Lewis and Clark County in June - FAQ

What are the expected maximum and minimum temperatures in Lewis and Clark County during June?

Enjoy moderate daytime temperatures of up to 22° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Lewis and Clark County during June?

Moderate rainfall is anticipated in Lewis and Clark County during June, with a total of 65.8 mm spread over approximately 5 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Lewis and Clark County during June?

The average wind speed in Lewis and Clark County during June is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

June rainfall patterns in Lewis and Clark County

Explore the daily rainfall trends and prepare for Lewis and Clark Countys June weather 💧
Typically, Lewis and Clark County has 5 rainy days in June with a total of 65.8 mm of rainfall.

UV exposure in Lewis and Clark County during June

Stay informed about UV levels for safe outdoor activities throughout the month of June ☀️
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Helena
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Location coordinates Where is Lewis and Clark County?

Get accurate weather forecasts for Lewis and Clark County, located at latitude 46.593 and longitude -112.036. Stay updated with localized weather information tailored for Lewis and Clark County.

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