July weather forecast
Lewiston, MN

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Weather in July

July, like June, in Lewiston, Minnesota, is a moderately hot summer month, with an average temperature fluctuating between 78.3°F (25.7°C) and 61.3°F (16.3°C).

Temperature

In Lewiston, July is the month with the highest recorded average temperatures, measuring a high of 78.3°F (25.7°C) and a low of 61.3°F (16.3°C).

Humidity

In July, the average relative humidity is 83%.

Rainfall

In July, in Lewiston, the rain falls for 16.4 days. Throughout July, 3.07" (78mm) of precipitation is accumulated. In Lewiston, Minnesota, during the entire year, the rain falls for 122.7 days and collects up to 24.06" (611mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in July is 15h and 5min.
On the first day of the month, sunrise is at 5:29 am and sunset at 8:54 pm. On the last day of July, in Lewiston, sunrise is at 5:55 am and sunset at 8:32 pm CDT.

Sunshine

The month with the most sunshine is July, with an average of 9.6h of sunshine.

UV index

With an average maximum UV index of 6, July is the month with the highest UV index in Lewiston. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Lewiston?

Lewiston's warmest month, July, registers temperatures that range from a high of 78.3°F (25.7°C) to a low of 61.3°F (16.3°C).

What are July temperatures in Lewiston?

The high-temperature, in July, in Lewiston, is 78.3°F (25.7°C), while the low-temperature averages to 61.3°F (16.3°C).

What is the average humidity in July in Lewiston?

In July, the average relative humidity is 83%.

How many days does it rain in July in Lewiston?

In Lewiston, during July, the rain falls for 16.4 days and regularly aggregates up to 3.07" (78mm) of precipitation.

When it does not snow in Lewiston?

In Lewiston, snow does not fall in June through September.

How many hours of daylight does Lewiston have in July?

The average day length in July in Lewiston is 15h and 5min.

When are sunrise and sunset in July in Lewiston?

In July, on the first day of the month, sunrise is at 5:29 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:32 pm CDT.

What month has the most sunshine in Lewiston?

The month with the most sunshine is July, with an average of 9.6h of sunshine.

How long on average sun shines in July in Lewiston?

In Lewiston, Minnesota, the average sunshine duration in July is 9.6h.

When is the highest UV index in Lewiston?

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the UV index intensity in July in Lewiston?

In July, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Lewiston, MN

Average temperature in July - Lewiston, MN
  • Average high temperature in July: 78.3°F

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in July: 61.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

Average pressure in July
Lewiston, MN

Average pressure in July - Lewiston, MN
  • Average pressure in July: 29.95"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in July
Lewiston, MN

Average wind speed in July - Lewiston, MN
  • Average wind speed in July: 7.1mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in July
Lewiston, MN

Average humidity in July - Lewiston, MN
  • Average humidity in July: 83%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (75%).

Average rainfall in July
Lewiston, MN

Average rainfall in July - Lewiston, MN
  • Average rainfall in July: 3.07"

The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in July
Lewiston, MN

Average rainfall days in July - Lewiston, MN
  • Average rainfall days in July: 16.4 days

The month with the highest number of rainy days is June (18.2 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in July
Lewiston, MN

Average snowfall in July - Lewiston, MN
  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Lewiston, MN

Average snowfall days in July - Lewiston, MN
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Lewiston, MN

Average daylight in July / Average sunshine in July - Lewiston, MN
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in July: 9h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in July
Lewiston, MN

Average sunshine days in July - Lewiston, MN
  • Average sunshine days in July: 11.1 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in July
Lewiston, MN

Average UV index in July - Lewiston, MN
  • Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in July
Lewiston, MN

Average cloud cover in July - Lewiston, MN
  • Average cloud cover in July: 35

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in July
Lewiston, MN

Average visibility in July - Lewiston, MN
  • Average visibility in July: 5mi

The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).

Lewiston, Minnesota, USA

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