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
September reveals a small adjustment in temperature, transitioning from an average high of a tropical 87.4°F (30.8°C) in August to a moderately hot 81.3°F (27.4°C). An average low-temperature of 62.2°F (16.8°C) marks the month of September in Randolph.Heat index
The heat index in September is evaluated at a tropical 86°F (30°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
The average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.73" (44mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September in Randolph, sunrise is at 6:46 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:59 pm EDT.
Sunshine
In September, the average sunshine in Randolph is 8.7h.UV index
The average daily maximum UV index in September in Randolph is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. 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 the temperatures in Randolph in September?
What is the average humidity in September in Randolph?
What is the driest month in Randolph?
How many days does it rain in September in Randolph?
When it does not snow in Randolph?
Does it snow in Randolph in September?
What is the average length of the day in September in Randolph?
When are sunrise and sunset in September in Randolph?
How many hours of sunshine does Randolph have in September?
What is the UV index reading in September in Randolph?
Average temperature in September
Randolph, VA
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in September
Randolph, VA
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Randolph, VA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Randolph, VA
- Average humidity in September: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Randolph, VA
- Average rainfall in September: 1.73"
The wettest months (with the highest rainfall) are May and August (2.91").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Randolph, VA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in September
Randolph, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Randolph, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 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
Randolph, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Randolph, VA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Randolph, VA
- Average UV index in September: 5
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
Randolph, VA
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 32).
Average visibility in September
Randolph, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Randolph, Virginia, USA
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