Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October ushers in a slight temperature change, with average high-temperatures reducing from September's tropical 89.8°F (32.1°C) to a warm 77°F (25°C). Grimes experiences a dramatic descent in temperature during October, with the average nighttime reading settling at a cool 54.5°F (12.5°C).Humidity
The average relative humidity in October in Grimes is 46%.Rainfall
In Grimes, in October, during 3.9 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Grimes, during the entire year, the rain falls for 75.1 days and collects up to 17.09" (434mm) of precipitation.Daylight
In Grimes, the average length of the day in October is 11h and 10min.On the first day of the month, sunrise is at 7:04 am and sunset at 6:49 pm. On the last day of October, in Grimes, sunrise is at 7:34 am and sunset at 6:07 pm PDT.
Sunshine
In Grimes, the average sunshine in October is 7.1h.UV index
In Grimes, the average daily maximum UV index in October is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 4 in October transforms into this advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What are October temperatures in Grimes?
What is the average humidity in October in Grimes?
How much does it rain in Grimes in October?
What is the average length of the day in October in Grimes?
When are sunrise and sunset in October in Grimes?
How many hours of sunshine does Grimes have in October?
What is the UV index intensity in October in Grimes?
Average temperature in October
Grimes, CA
- Average high temperature in October: 77°F
The warmest month (with the highest average high temperature) is July (97.2°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in October: 54.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in October
Grimes, CA
- Average pressure in October: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in October
Grimes, CA
- Average wind speed in October: 5.2mph
The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in October
Grimes, CA
- Average humidity in October: 46%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (38%).
Average rainfall in October
Grimes, CA
- Average rainfall in October: 0.87"
The wettest month (with the highest rainfall) is February (3.07").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Grimes, CA
- Average rainfall days in October: 3.9 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (0.9 days).
Average daylight in October /
Average sunshine in October
Grimes, CA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 7h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in October
Grimes, CA
- Average sunshine days in October: 26.5 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (16.2 days).
Average UV index in October
Grimes, CA
- Average UV index in October: 4
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in October
Grimes, CA
- Average cloud cover in October: 15
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in October
Grimes, CA
- Average visibility in October: 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).
Grimes, California, USA
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