October weather forecastGrand Terrace, CA
October
Weather in October
October, like September, in Grand Terrace, California, is another warm autumn month, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 78.1°F (25.6°C).Temperature
The beginning of October involves a decrease in the average high-temperature, transitioning from a tropical 87.4°F (30.8°C) in September to a moderately hot 78.1°F (25.6°C). Grand Terrace experiences a substantial decline from the daytime high temperatures in October, settling on an average low of 56.3°F (13.5°C).Humidity
In Grand Terrace, the average relative humidity in October is 44%.Rainfall
In Grand Terrace, during October, the rain falls for 1.8 days and regularly aggregates up to 0.12" (3mm) of precipitation. Throughout the year, there are 46.6 rainfall days, and 6.18" (157mm) of precipitation is accumulated.Snowfall
In Grand Terrace, snow does not fall in January, March through December.Daylight
In October, the average length of the day is 11h and 19min.On the first day of October in Grand Terrace, sunrise is at 6:44 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:57 pm PDT.
Sunshine
In Grand Terrace, the average sunshine in October is 9h.UV index
The average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In October, the UV index of 5 transforms into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Grand Terrace, CA
- Average high temperature in October: 78.1°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).
- Average low temperature in October: 56.3°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in October
Grand Terrace, CA
- Average pressure in October: 29.93"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in October
Grand Terrace, CA
- Average wind speed in October: 4.8mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in October
Grand Terrace, CA
- Average humidity in October: 44%
The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).
Average rainfall in October
Grand Terrace, CA
- Average rainfall in October: 0.12"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in October
Grand Terrace, CA
- Average rainfall days in October: 1.8 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in October
Grand Terrace, CA
- Average snowfall days in October: 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 October /
Average sunshine in October
Grand Terrace, CA
- Average daylight in October: 11h and 18min
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 October: 9h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in October
Grand Terrace, CA
- Average sunshine days in October: 27.9 days
The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).
Average UV index in October
Grand Terrace, CA
- Average UV index in October: 5
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in October
Grand Terrace, CA
- Average cloud cover in October: 9
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in October
Grand Terrace, 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).
