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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 80.8°F (27.1°C) in August to a still warm 74.3°F (23.5°C). In Robertsville, an average temperature of 54.9°F (12.7°C) is noted during September nights.Humidity
In September, the average relative humidity in Robertsville is 79%.Rainfall
September is the month with the least rainfall in Robertsville. Rain falls for 15.2 days and accumulates 2.05" (52mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Robertsville is 12h and 27min.On the first day of September, sunrise is at 6:52 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:07 pm EDT.
Sunshine
The average sunshine in September in Robertsville, Ohio, is 8.3h.UV index
In September, the average daily maximum UV index in Robertsville is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Robertsville?
What is the average humidity in September in Robertsville?
What is the driest month in Robertsville?
How much does it rain in Robertsville in September?
When it does not snow in Robertsville?
Does it snow in Robertsville in September?
How many hours of daylight does Robertsville have in September?
When is the sunrise / sunset in September in Robertsville?
How many hours of sunshine does Robertsville have in September?
What is the UV index intensity in September in Robertsville?
Average temperature in September
Robertsville, OH
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in September
Robertsville, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Robertsville, OH
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Robertsville, OH
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in September
Robertsville, OH
- Average rainfall in September: 2.05"
The wettest months (with the highest rainfall) are April and June (3.03").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Robertsville, OH
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in September
Robertsville, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Robertsville, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Robertsville, OH
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Robertsville, OH
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is November (13.6 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Robertsville, OH
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Robertsville, OH
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Robertsville, OH
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
Robertsville, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location