September weather forecastMons, CA
September
Weather in September
September, the first month of the autumn in Mons, is also a moderately hot month, with an average temperature fluctuating between 84.9°F (29.4°C) and 61.9°F (16.6°C).Temperature
The commencement of September records an average high-temperature of a warm 84.9°F (29.4°C), barely varying from August's 90°F (32.2°C). September nights in Mons showcase a dramatic shift from daytime highs to an average temperature of 61.9°F (16.6°C).Heat index
The heat index for September is calculated to be 84.2°F (29°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The average relative humidity in September in Mons is 41%.Rainfall
In Mons, during September, the rain falls for 3.6 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Mons, during the entire year, the rain falls for 52.8 days and collects up to 7.01" (178mm) of precipitation.Snowfall
January, April through October and December are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of September, in Mons, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
The average sunshine in September is 10.5h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mons, CA
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is December (57°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in September
Mons, CA
- Average pressure in September: 29.86"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Mons, CA
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest month (with the lowest average wind speed) is September (5.1mph).
Average humidity in September
Mons, CA
- Average humidity in September: 41%
The month with the highest relative humidity is February (54%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Mons, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Mons, CA
- Average rainfall days in September: 3.6 days
The month with the highest number of rainy days is July (6.3 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in September
Mons, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are January, April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Mons, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Mons, CA
- Average daylight in September: 12h 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 September: 10h and 30min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Mons, CA
- Average sunshine days in September: 23.2 days
The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is July (20.7 days).
Average UV index in September
Mons, CA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Mons, CA
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 23).
The months with the least cloud cover are June and August (Cloud cover 6).
Average visibility in September
Mons, 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).
