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
Hayward experiences an average high-temperature of a moderately hot 81.7°F (27.6°C) in September, marking an insignificant shift from 86.4°F (30.2°C) in August. The nights of September in Hayward anticipate an average low-temperature of 63°F (17.2°C).Heat index
In September, the heat index is evaluated at a hot 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in September in Hayward is 72%.Rainfall
September is the month with the least rainfall in Hayward. Rain falls for 11.3 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Hayward, snow does not fall in April through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:43 pm CDT.
Sunshine
In Hayward, the average sunshine in September is 9.7h.UV index
In Hayward, Missouri, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Hayward?
What is the average humidity in September in Hayward?
What is the driest month in Hayward?
How much does it rain in Hayward in September?
When it does not snow in Hayward?
Does it snow in Hayward in September?
How many hours of daylight does Hayward have in September?
When is the sunrise / sunset in September in Hayward?
How long on average sun shines in September in Hayward?
How high is the UV index in September in Hayward?
Average temperature in September
Hayward, MO
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (43.2°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Hayward, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Hayward, MO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Hayward, MO
- Average humidity in September: 72%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Hayward, MO
- Average rainfall in September: 1.57"
The wettest months (with the highest rainfall) are March and April (4.37").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Hayward, MO
- Average rainfall days in September: 11.3 days
The months with the highest number of rainy days are May and July (16.2 days).
The month with the least rainy days is November (10 days).
Average snowfall in September
Hayward, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Hayward, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Hayward, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Hayward, MO
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
Hayward, MO
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Hayward, MO
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in September
Hayward, MO
- 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).
Hayward, Missouri, USA
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