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United States weather

Weather in Lewiston, Idaho for July 2026

Your guide to Lewiston weather in July - trends and predictions

    Official Weather Alert ⚠️

  • Meteorological - Air Quality Alert - See hour by hour.

    • Temperatures

  • Until now, July 2026 in Lewiston has been nearly identical to the historical average, with a temperature of 32.7 °C (showing only a slight deviation of 0 °C).

  • The forecast for the next days in Lewiston predicts temperatures to be around 36 °C, close to the historical average.

  • In general, the average temperature in Lewiston at the beginning of July is 31.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 34.9 °C by the end of July.

    • Rain 🌧️

  • Precipitation in Lewiston during July 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
31
Dry days
Average rainy days
0
Rainy days
Average snowy days
0
Snow days
Average temperatures
32°/15°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
36 %
Avg humidity

Lewiston Weather July

Move between months or click on a day
June
August
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
32°
2
Partly cloudy
31°
3
Sunny
29°
4
Overcast
31°
5
Overcast
29°
6
Sunny
32°
7
Sunny
35°
8
Thundery outbreaks possible
36°
9
Partly cloudy
32°
10
Partly cloudy
30°
11
Sunny
33°
12
Sunny
32°
13
Sunny
36°
14
Sunny
34°
15
Sunny
32°
16
Sunny
35°
17
Sunny
34°
18
Sunny
35°
19
Overcast
32°
20
Weather Alert Sunny
38°
21
Partly cloudy
38°
22
Smoky haze
39°
23
Smoky haze
38°
24
Sunny
36°
25
Sunny
36°
26
Sunny
32°
27
Sunny
31°
28
Sunny
32°
29
Sunny
37°
30
Sunny
38°
31
Sunny
38°

Temperatures trend during July in Lewiston

See the weather trend as well as the moving average line

July weather in Lewiston day by day

Click on a date for more information
June August
Date Weather Temperatures Rain UV More
Jul. 1 Partly cloudy
Partly cloudy
 32° /13° 0 mm 10
Jul. 2 Partly cloudy
Partly cloudy
 31° /14° 0 mm 10
Jul. 3 Sunny
Sunny
 29° /11° 0 mm 9
Jul. 4 Overcast
Overcast
 31° /13° 0 mm 9
Jul. 5 Overcast
Overcast
 29° /14° 0 mm 9
Jul. 6 Sunny
Sunny
 32° /12° 0 mm 10
Jul. 7 Sunny
Sunny
 35° /13° 0 mm 10
Jul. 8 Thundery outbreaks possible
Thundery outbreaks possible
 36° /17° 0 mm 10
Jul. 9 Partly cloudy
Partly cloudy
 32° /15° 0 mm 10
Jul. 10 Partly cloudy
Partly cloudy
 30° /14° 0 mm 9
Jul. 11 Sunny
Sunny
 33° /16° 0 mm 10
Jul. 12 Sunny
Sunny
 32° /18° 0 mm 10
Jul. 13 Sunny
Sunny
 36° /16° 0 mm 10
Jul. 14 Sunny
Sunny
 34° /18° 0.2 mm 10
Jul. 15 Sunny
Sunny
 32° /15° 0 mm 9
Jul. 16 Sunny
Sunny
 35° /15° 0.2 mm 9
Jul. 17 Sunny
Sunny
 34° /18° 0 mm 9
Jul. 18 Sunny
Sunny
 35° /17° 0 mm 10
Jul. 19 Overcast
Overcast
 32° /17° 0 mm 8
Jul. 20 Sunny
Sunny
 38° /21° 0 mm 5.4
Jul. 21 Partly cloudy
Partly cloudy
 38° /20° 0 mm 9.2
Jul. 22 Smoky haze
Smoky haze
 39° /20° 0 mm 7.1
Jul. 23 Smoky haze
Smoky haze
 38° /20° 0.6 mm 7
Jul. 24 Sunny
Sunny
 36° /16° 0.4 mm 9
Jul. 25 Sunny
Sunny
 36° /16° 0 mm 9
Jul. 26 Sunny
Sunny
 32° /14° 0 mm 8
Jul. 27 Sunny
Sunny
 31° /13° 0 mm 8
Jul. 28 Sunny
Sunny
 32° /13° 0 mm 8
Jul. 29 Sunny
Sunny
 37° /16° 0 mm 9
Jul. 30 Sunny
Sunny
 38° /18° 0 mm 9
Jul. 31 Sunny
Sunny
 38° /19° 0 mm 9
Next
Important Notice
Our weather forecast for Lewiston in July 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 Lewiston forecast closer to your planned date for the most up-to-date weather information.
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Lewiston in July - FAQ

What are the expected maximum and minimum temperatures in Lewiston during July?
Expect warm days with temperatures around 32°, cooling to mild conditions of 15° after sunset. Perfect for those who enjoy warm weather.

How much rainfall should be expected in Lewiston during July?
Rainfall in Lewiston during July is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.

What are the typical wind conditions in Lewiston during July?
The average wind speed in Lewiston during July is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

UV exposure in Lewiston during July

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

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Location coordinates Where is Lewiston?

Get accurate weather forecasts for Lewiston, located at latitude 46.417 and longitude -117.018. Stay updated with localized weather information tailored for Lewiston.

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