July weather forecast
Petersburg, AK

Colorful buildings, docked ships in Quaint fishing village in Petersburg, Alaska, on Mitkof Island
Colorful buildings, docked ships in Quaint fishing village in Petersburg, Alaska, on Mitkof Island

Weather in July

July, like June, is another mild summer month in Petersburg, Alaska, with an average temperature ranging between max 59.7°F (15.4°C) and min 50.2°F (10.1°C).

Temperature

The warmest month is July, with an average high-temperature of 59.7°F (15.4°C) and an average low-temperature of 50.2°F (10.1°C).

Humidity

In July, the average relative humidity is 85%.

Rainfall

In July, the rain falls for 17 days. Throughout July, 3.5" (89mm) of precipitation is accumulated. In Petersburg, during the entire year, the rain falls for 197.9 days and collects up to 53.03" (1347mm) of precipitation.

Snowfall

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

Ocean temperature

In Petersburg, the average seawater temperature in July is 52.2°F (11.2°C).
Note: Swimming in 52.2°F (11.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in July is 17h and 5min.
On the first day of the month, sunrise is at 4:04 am and sunset at 9:47 pm. On the last day of July, in Petersburg, sunrise is at 4:50 am and sunset at 9:06 pm AKDT.

Sunshine

In July, the average sunshine in Petersburg is 6.8h.

UV index

July and August, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 in July interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in Petersburg?

The warmest month in Petersburg, Alaska, is July, with an average high-temperature of 59.7°F (15.4°C) and an average low-temperature of 50.2°F (10.1°C).

What is the temperature in July in Petersburg?

In July, in Petersburg, Alaska, the average high-temperature is 59.7°F (15.4°C), and the average low-temperature is 50.2°F (10.1°C).

What is the average humidity in July in Petersburg?

The average relative humidity in July in Petersburg, Alaska, is 85%.

How much does it rain in Petersburg in July?

In July, in Petersburg, the rain falls for 17 days. Throughout July, 3.5" (89mm) of precipitation is accumulated.

When it does not snow in Petersburg?

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

How cold is the water in July in Petersburg?

In Petersburg, Alaska, the average seawater temperature in July is 52.2°F (11.2°C). Swimming in 52.2°F (11.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in July in Petersburg?

In Petersburg, Alaska, the average day length in July is 17h and 5min.

What time are sunrise and sunset in July in Petersburg?

In July, on the first day of the month, sunrise is at 4:04 am and sunset at 9:47 pm. On the last day of the month, sunrise is at 4:50 am and sunset at 9:06 pm AKDT.

How long on average sun shines in July in Petersburg?

In Petersburg, Alaska, the average sunshine duration in July is 6.8h.

What is the month with the highest UV index in Petersburg?

The months with the highest UV index are July and August, with an average maximum UV index of 4.

How high is the UV index in July in Petersburg?

In Petersburg, the average daily maximum UV index in July is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Petersburg, AK

Average temperature in July - Petersburg, AK
  • Average high temperature in July: 59.7°F

The warmest month (with the highest average high temperature) is July (59.7°F).
The month with the lowest average high temperature is December (32.4°F).

  • Average low temperature in July: 50.2°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).

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Average pressure in July
Petersburg, AK

Average pressure in July - Petersburg, AK
  • Average pressure in July: 30.05"Hg

The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed in July
Petersburg, AK

Average wind speed in July - Petersburg, AK
  • Average wind speed in July: 3.9mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (3.9mph).

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Average humidity in July
Petersburg, AK

Average humidity in July - Petersburg, AK
  • Average humidity in July: 85%

The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).

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Average rainfall in July
Petersburg, AK

Average rainfall in July - Petersburg, AK
  • Average rainfall in July: 3.5"

The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").

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Average rainfall days in July
Petersburg, AK

Average rainfall days in July - Petersburg, AK
  • Average rainfall days in July: 17 days

The month with the highest number of rainy days is October (20.1 days).
The month with the least rainy days is February (9.5 days).

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Average snowfall in July
Petersburg, AK

Average snowfall in July - Petersburg, AK
  • Average snowfall in July: 0"

The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Petersburg, AK

Average snowfall days in July - Petersburg, AK
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in July
Petersburg, AK

Average sea temperature in July - Petersburg, AK
  • Average sea temperature in July: 52.1°F

The best month for swimming (with the highest average sea temperature) is August (54.2°F).
The coldest month (with the lowest average sea temperature) is March (41°F).

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Average daylight in July /
Average sunshine in July
Petersburg, AK

Average daylight in July / Average sunshine in July - Petersburg, AK
  • Average daylight in July: 17h and 5min

The month with the longest days is June (Average daylight: 17h and 44min).
The month with the shortest days is December (Average daylight: 6h and 53min).

  • Average sunshine in July: 6h and 48min

The month with the most sunshine is May (Average sunshine: 7h and 24min).
The months with the least sunshine are January and November (Average sunshine: 3h and 24min).

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Average sunshine days in July
Petersburg, AK

Average sunshine days in July - Petersburg, AK
  • Average sunshine days in July: 11.8 days

The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).

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Average UV index in July
Petersburg, AK

Average UV index in July - Petersburg, AK
  • Average UV index in July: 4

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in July
Petersburg, AK

Average cloud cover in July - Petersburg, AK
  • Average cloud cover in July: 58

The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are February and May (Cloud cover 54).

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Average visibility in July
Petersburg, AK

Average visibility in July - Petersburg, AK
  • Average visibility in July: 5mi

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

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