September weather forecastDewar, OK
September
Weather in September
September, the first month of the autumn in Dewar, is still a warm month, with an average temperature ranging between max 84.6°F (29.2°C) and min 64.6°F (18.1°C).Temperature
The average high-temperature slightly decreases in September, shifting from a hot 91.9°F (33.3°C) in August to a warm 84.6°F (29.2°C). An average temperature of 64.6°F (18.1°C) is recorded during the nights in September.Heat index
For September, the heat index is appraised at a tropical 91.4°F (33°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
In Dewar, the average relative humidity in September is 69%.Rainfall
In Dewar, during September, the rain falls for 12.3 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Dewar, during the entire year, the rain falls for 132.2 days and collects up to 29.49" (749mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Dewar, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:56 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:08 pm CDT.
Sunshine
In Dewar, Oklahoma, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September 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: A daily maximum UV index of 5 in September translates into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Around midday, solar radiation is most harmful; hence, exposure should be limited. 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
Dewar, OK
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in September: 64.6°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in September
Dewar, OK
- Average pressure in September: 29.98"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 September
Dewar, OK
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Dewar, OK
- Average humidity in September: 69%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Dewar, OK
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is May (4.84").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in September
Dewar, OK
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Dewar, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Dewar, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dewar, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Dewar, OK
- Average sunshine days in September: 16 days
The month with the most sunshine days is January (21.8 days).
The months with the least sunshine days are April and May (14.4 days).
Average UV index in September
Dewar, OK
- Average UV index in September: 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 2).
Average cloud cover in September
Dewar, OK
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Dewar, OK
- 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).
