September weather forecastMontrose, VA
September
Weather in September
The first month of the autumn, September, is still a warm month in Montrose, Virginia, with an average temperature fluctuating between 63.1°F (17.3°C) and 81.3°F (27.4°C).Temperature
As August transitions into September, Montrose sees a gentle drop in the average high-temperature, transitioning from a tropical 88.3°F (31.3°C) to a moderately hot 81.3°F (27.4°C). In the month of September, Montrose witnesses a consistent average low-temperature of 63.1°F (17.3°C).Heat index
The average heat index in September is estimated at a hot 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Heat index determinations are made taking into account the shade and light air movements. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. 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
In September, the average relative humidity in Montrose is 73%.Rainfall
The month with the least rainfall in Montrose is September, when the rain falls for 11.2 days and typically collects 1.73" (44mm) of precipitation.Snowfall
In Montrose, snow does not fall in May through October.Daylight
In Montrose, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:53 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Montrose, VA
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (44.6°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Montrose, VA
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Montrose, VA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Montrose, VA
- Average humidity in September: 73%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).
Average rainfall in September
Montrose, VA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Montrose, VA
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Montrose, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Montrose, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Montrose, VA
- Average daylight in September: 12h and 24min
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 36min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Montrose, VA
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Montrose, VA
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Montrose, VA
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Montrose, VA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are May and December (5mi).
