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
The move into September indicates a slight reduction in the average high-temperature, down from August's warm 85.3°F (29.6°C) to a still moderately hot 79°F (26.1°C). The average temperature during September nights is registered at a mild 57.7°F (14.3°C).Humidity
The average relative humidity in September in Rio Grande is 75%.Rainfall
In Rio Grande, in September, it is raining for 10.9 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Rio Grande, there are 149 rainfall days, and 16.26" (413mm) of precipitation is accumulated.Snowfall
In Rio Grande, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Rio Grande, sunrise is at 6:59 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:13 pm EDT.
Sunshine
In Rio Grande, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Rio Grande in September?
What is the average humidity in September in Rio Grande?
How many days does it rain in September in Rio Grande?
When it does not snow in Rio Grande?
Does it snow in Rio Grande in September?
What is the average length of the day in September in Rio Grande?
When is the sunrise / sunset in September in Rio Grande?
How many hours of sunshine does Rio Grande have in September?
What is the UV index reading in September in Rio Grande?
Average temperature in September
Rio Grande, OH
- Average high temperature in September: 79°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Rio Grande, OH
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Rio Grande, OH
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Rio Grande, OH
- Average humidity in September: 75%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Rio Grande, OH
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is November (0.83").
Average rainfall days in September
Rio Grande, OH
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Rio Grande, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rio Grande, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 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
Rio Grande, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Rio Grande, OH
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Rio Grande, OH
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Rio Grande, OH
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Rio Grande, OH
- Average visibility in September: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Rio Grande, Ohio, USA
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