Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Grandfield's transition into September involves a shift in temperature, receding from a very hot 97.2°F (36.2°C) in August to a hot 87.3°F (30.7°C). Throughout September, the average low-temperature dips to a pleasant 68.4°F (20.2°C).Heat index
September's average heat index is estimated at a hot 93.2°F (34°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humidity
The average relative humidity in September in Grandfield is 60%.Rainfall
In September, in Grandfield, the rain falls for 13 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. Throughout the year, in Grandfield, there are 111 rainfall days, and 22.24" (565mm) of precipitation is accumulated.Snowfall
In Grandfield, snow does not fall in May through October.Daylight
In Grandfield, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:08 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:19 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
Is it hot in Grandfield during September?
What is the average humidity in September in Grandfield?
How many days does it rain in September in Grandfield?
When it does not snow in Grandfield?
How many hours of daylight does Grandfield have in September?
When are sunrise and sunset in September in Grandfield?
How long on average sun shines in September in Grandfield?
What is the UV index reading in September in Grandfield?
Average temperature in September
Grandfield, OK
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (97.2°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in September: 68.4°F
The month with the highest average low temperature is July (75.9°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).
Average pressure in September
Grandfield, OK
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Grandfield, OK
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).
Average humidity in September
Grandfield, OK
- Average humidity in September: 60%
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
Grandfield, OK
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (3.62").
The driest months (with the least rainfall) are January and February (0.94").
Average rainfall days in September
Grandfield, OK
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Grandfield, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Grandfield, OK
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Grandfield, OK
- Average daylight in September: 12h and 2min
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: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Grandfield, OK
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is January (25 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in September
Grandfield, OK
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Grandfield, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Grandfield, 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).
Grandfield, Oklahoma, USA
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