August weather forecast
Montpelier, ID

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Weather in August

The last month of the summer, August, is also a moderately hot month in Montpelier, Idaho, with an average temperature ranging between max 77.7°F (25.4°C) and min 48.6°F (9.2°C).

Temperature

Montpelier, Idaho, experiences an average high-temperature of a still warm 77.7°F (25.4°C) in August, marking an insignificant shift from 79°F (26.1°C) in July. Montpelier records a significant temperature drop in August nights, lowering to an average of 48.6°F (9.2°C).

Humidity

The least humid month is August, with an average relative humidity of 42%.

Rainfall

In Montpelier, in August, during 8.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Montpelier, during the entire year, the rain falls for 117.5 days and collects up to 20.24" (514mm) of precipitation.

Snowfall

In Montpelier, snow does not fall in July and August.

Daylight

In Montpelier, the average length of the day in August is 13h and 50min.
On the first day of August, sunrise is at 6:18 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:00 pm MDT.

Sunshine

The average sunshine in August is 11.8h.

UV index

In Montpelier, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 4 during August translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

In Montpelier, 77.7°F (25.4°C) is the average high-temperature and 48.6°F (9.2°C) is the average low-temperature during August.

What is the least humid month?

August is the least humid month, with an average relative humidity of 42%.

What is the average humidity in August?

In August, the average relative humidity is 42%.

How many days does it rain in August?

In August, the rain falls for 8.5 days. Throughout August, 0.79" (20mm) of precipitation is accumulated.

When it does not snow?

July and August are months without snowfall.

Does it snow in August?

In Montpelier, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August?

The average day length in August in Montpelier is 13h and 50min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:18 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:00 pm MDT.

How long on average sun shines in August?

The average sunshine duration in August is 11.8h.

How high is the UV index in August?

In Montpelier, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
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 August
Montpelier, ID

Average temperature in August - Montpelier, ID
  • Average high temperature in August: 77.7°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (25.2°F).

  • Average low temperature in August: 48.6°F

The month with the highest average low temperature is July (48.9°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

Average pressure in August
Montpelier, ID

Average pressure in August - Montpelier, ID
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Montpelier, ID

Average wind speed in August - Montpelier, ID
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).

Average humidity in August
Montpelier, ID

Average humidity in August - Montpelier, ID
  • Average humidity in August: 42%

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (42%).

Average rainfall in August
Montpelier, ID

Average rainfall in August - Montpelier, ID
  • Average rainfall in August: 0.79"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is July (0.63").

Average rainfall days in August
Montpelier, ID

Average rainfall days in August - Montpelier, ID
  • Average rainfall days in August: 8.5 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6 days).

Average snowfall in August
Montpelier, ID

Average snowfall in August - Montpelier, ID
  • Average snowfall in August: 0"

The month with the highest snowfall is February (18.39").
The months with the least snowfall are July and August (0").

Average snowfall days in August
Montpelier, ID

Average snowfall days in August - Montpelier, ID
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (21.6 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in August /
Average sunshine in August
Montpelier, ID

Average daylight in August / Average sunshine in August - Montpelier, ID
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in August
Montpelier, ID

Average sunshine days in August - Montpelier, ID
  • Average sunshine days in August: 18.1 days

The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is February (6.8 days).

Average UV index in August
Montpelier, ID

Average UV index in August - Montpelier, ID
  • Average UV index in August: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in August
Montpelier, ID

Average cloud cover in August - Montpelier, ID
  • Average cloud cover in August: 12

The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in August
Montpelier, ID

Average visibility in August - Montpelier, ID
  • Average visibility in August: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

Montpelier, Idaho, USA

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