July weather forecast
London, CA

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Weather in July

July in London, California, is a sweltering summer month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 100.4°F (38°C).

Temperature

In London, July is the month with the highest recorded average temperatures, measuring a high of 100.4°F (38°C) and a low of 64.6°F (18.1°C).

Humidity

July and August, with an average relative humidity of 30%, are the least humid months.

Rainfall

In July, the rain falls for 2.8 days. Throughout July, 0.12" (3mm) of precipitation is accumulated. In London, during the entire year, the rain falls for 62.1 days and collects up to 13.31" (338mm) of precipitation.

Snowfall

In London, snow does not fall in January, March through December.

Daylight

In July, the average length of the day is 14h and 22min.
On the first day of the month, sunrise is at 5:43 am and sunset at 8:19 pm. On the last day of July, sunrise is at 6:04 am and sunset at 8:04 pm PDT.

Sunshine

June and July, with an average of 12.1h of sunshine, are months with the most sunshine.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In July, the UV index of 7 transforms into the following advice:
Resist overexposure. Safeguarding from solar damage is indispensable. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

July, recording an average high temperature of 100.4°F (38°C) and a low temperature of 64.6°F (18.1°C), is London's warmest month.

How hot does it get in July?

The high-temperature, in July, in London, is 100.4°F (38°C), while the low-temperature averages to 64.6°F (18.1°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in May is appraised at 80.6°F (27°C).

What are the least humid months in London?

July and August, with an average relative humidity of 30%, are the least humid months.

What is the average humidity in July?

In July, the average relative humidity is 30%.

How many days does it rain in July?

In London, during July, the rain falls for 2.8 days and regularly aggregates up to 0.12" (3mm) of precipitation.

When it does not snow?

January, March through December are months without snowfall.

What is the average length of the day in July?

In London, the average day length in July is 14h and 22min.

When are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:43 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:04 pm PDT.

What is the month with the most sunshine?

June and July, with an average of 12.1h of sunshine, are months with the most sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 12.1h.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in July?

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

Average temperature in July
London, CA

Average temperature in July - London, CA
  • Average high temperature in July: 100.4°F

The warmest month (with the highest average high temperature) is July (100.4°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in July: 64.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is December (41.7°F).

Average pressure in July
London, CA

Average pressure in July - London, CA
  • Average pressure in July: 29.91"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in July
London, CA

Average wind speed in July - London, CA
  • Average wind speed in July: 5.3mph

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 (4.1mph).

Average humidity in July
London, CA

Average humidity in July - London, CA
  • Average humidity in July: 30%

The month with the highest relative humidity is January (67%).
The months with the lowest relative humidity are July and August (30%).

Average rainfall in July
London, CA

Average rainfall in July - London, CA
  • Average rainfall in July: 0.12"

The wettest month (with the highest rainfall) is March (2.6").
The driest months (with the least rainfall) are June and August (0.08").

Average rainfall days in July
London, CA

Average rainfall days in July - London, CA
  • Average rainfall days in July: 2.8 days

The month with the highest number of rainy days is March (11 days).
The month with the least rainy days is August (0.9 days).

Average snowfall days in July
London, CA

Average snowfall days in July - London, CA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in July /
Average sunshine in July
London, CA

Average daylight in July / Average sunshine in July - London, CA
  • Average daylight in July: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in July: 12h and 1min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in July
London, CA

Average sunshine days in July - London, CA
  • Average sunshine days in July: 26.9 days

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (19.5 days).

Average UV index in July
London, CA

Average UV index in July - London, CA
  • Average UV index in July: 7

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).

Average cloud cover in July
London, CA

Average cloud cover in July - London, CA
  • Average cloud cover in July: 5

The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July and August (Cloud cover 5).

Average visibility in July
London, CA

Average visibility in July - London, CA
  • Average visibility in July: 6mi

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

London, California, USA

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