September weather forecastHilmar, CA
September
Weather in September
September, the first month of the autumn in Hilmar, is also a hot month, with an average temperature ranging between min 61°F (16.1°C) and max 91.4°F (33°C).Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a sweltering 97.3°F (36.3°C) in August to a tropical 91.4°F (33°C). In September, a remarkable difference from daytime highs is noted, as Hilmar records an average temperature of 61°F (16.1°C) during the night.Humidity
The average relative humidity in September in Hilmar, California, is 39%.Rainfall
In Hilmar, during September, the rain falls for 1.8 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Hilmar, during the entire year, the rain falls for 65.2 days and collects up to 11.61" (295mm) of precipitation.Daylight
In Hilmar, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:34 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:47 pm PDT.
Sunshine
In Hilmar, the average sunshine in September is 11.5h.UV index
In September, the average daily maximum UV index in Hilmar is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hilmar, CA
- Average high temperature in September: 91.4°F
The warmest month (with the highest average high temperature) is July (98.1°F).
The month with the lowest average high temperature is December (56.1°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in September
Hilmar, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Hilmar, CA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).
Average humidity in September
Hilmar, CA
- Average humidity in September: 39%
The month with the highest relative humidity is January (71%).
The month with the lowest relative humidity is July (35%).
Average rainfall in September
Hilmar, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (2.24").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Hilmar, CA
- Average rainfall days in September: 1.8 days
The month with the highest number of rainy days is March (12.1 days).
The months with the least rainy days are June and August (1.1 days).
Average daylight in September /
Average sunshine in September
Hilmar, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Hilmar, CA
- Average sunshine days in September: 27.6 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in September
Hilmar, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Hilmar, CA
- Average cloud cover in September: 6
The months with the most cloud cover are March and December (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Hilmar, CA
- Average visibility in September: 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).
