United StatesAverage weather for Whittier in September
It's cool in September in Whittier with an average temperature of 12°C. Temperatures this month range from a low of 9°C to a high of 15°C. At night, you can expect temperatures between 1°C and 9°C.
Start of September
The month of September starts in Whittier with cool temps, averaging around 14°C during the day and nights around 7°C. There are plenty of days with a good chance of precipitation.
Mid September
By mid-September, daytime temps drop to around 13°C, with nights around 7°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Whittier is around 11°C, while nighttime temps are about 4°C. There’s a significant chance of many days with precipitation.
In September, there is an average of 362 mm of precipitation, spread over 17 days. Of the total precipitation, about 5,7 cm falls as snow in September. The wind speed is around 4 Bft, mostly coming from the Southeast.
Whittier in September |
New York | ||
|---|---|---|---|
 Average temperature |
12°C | 27°C | |
 Max. temperature |
15°C | 31°C | |
| Min. temperature |
9°C | -5°C | |
 Total precipitation |
362 mm | 57 mm | |
| Rainy days |
17 days | 9 days | |
 Total snowfall |
5,7 cm | 0 cm | |
| Snowy days |
3 days | 0 days | |
August
UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is September a good time to visit Whittier?
Looking for sun? September isn’t a good month to be in Whittier. There’s too much chance of rain this month.
Temperature records
With 20°C in 2016, Whittier reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 3°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of -7°C to a highest value of 13°C.
Check out the climate of Whittier for all months and discover the best travel time
Daily Temperature in September in Whittier
This chart shows the average daily high and low temperatures in September for Whittier, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Whittier
The chart below shows the average daily precipitation in September for Whittier, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 17 days of precipitation in Whittier.
Daily Snowfall in September in Whittier
This chart shows the average daily snowfall in September in Whittier, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in September.
Daily UV index in September in Whittier
This chart shows the average daily UV index in September in Whittier, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Whittier over the years
This chart shows the average temperature in September in Whittier, measured in degrees Celsius, over the past few years.
Total precipitation in September in Whittier over the years
This chart shows the average precipitation in September in Whittier, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in September in Whittier per year
This chart shows the average snowfall in September in Whittier, measured in centimeters, over the past few years.
Daily weather in September for Whittier
Click on any day in September to get detailed info about the usual weather on that day in Whittier. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Whittier
Have you been to Whittier in September?
Share your weather experience in September in Whittier.
Average weather in Whittier by month
Click on a month below to see detailed weather info for Whittier. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
