August weather forecastMontalvo, CA
August
Weather in August
August, the last month of the summer in Montalvo, is a warm month, with an average temperature varying between 74.3°F (23.5°C) and 62.6°F (17°C).Temperature
August and September mark Montalvo's peak of temperatures, averaging a high-temperature of 74.3°F (23.5°C).Humidity
In Montalvo, the average relative humidity in August is 66%.Rainfall
In Montalvo, during August, the rain falls for 2.1 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, there are 47.8 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Daylight
The average length of the day in August is 13h and 23min.On the first day of August, sunrise is at 6:08 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:23 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 12h of sunshine.UV index
With an average maximum UV index of 6, August is the month with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, a regular UV index of 6 translates into these guidelines:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Montalvo, CA
- Average high temperature in August: 74.3°F
The warmest months (with the highest average high temperature) are August and September (74.3°F).
The month with the lowest average high temperature is February (59°F).
- Average low temperature in August: 62.6°F
The month with the highest average low temperature is August (62.6°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure in August
Montalvo, CA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.9"Hg).
Average wind speed in August
Montalvo, CA
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in August
Montalvo, CA
- Average humidity in August: 66%
The months with the highest relative humidity are June and July (69%).
The month with the lowest relative humidity is November (56%).
Average rainfall in August
Montalvo, CA
- Average rainfall in August: 0.16"
The wettest month (with the highest rainfall) is January (1.34").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in August
Montalvo, CA
- Average rainfall days in August: 2.1 days
The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is August (2.1 days).
Average daylight in August /
Average sunshine in August
Montalvo, CA
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 12h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in August
Montalvo, CA
- Average sunshine days in August: 22.9 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is July (20.4 days).
Average UV index in August
Montalvo, CA
- Average UV index in August: 6
The month with the highest UV index is August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in August
Montalvo, CA
- Average cloud cover in August: 5
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in August
Montalvo, CA
- Average visibility in August: 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).





