September weather forecastValentine, NE

September

Weather in September

September in Valentine, Nebraska, indicates a gradual descent into chillier weather. Following August, the temperature records a significant decrease. A noteworthy phenomenon surfaces denoting the lowest snowfall of the year at 0.7" (18mm). Despite this, it is a time where fall colors start gracing the landscapes, transitioning into autumn. The shortening daylight hours forms a precursor to the forthcoming winter season.

Temperature

In Valentine, the beginning of September is marked by a lowered average high-temperature, shifting from August's hot 87.1°F (30.6°C) to a moderately hot 77.4°F (25.2°C). The average low-temperature reading in September for Valentine reflects a significant fall from the daytime highs, stabilizing at a chilly 47.5°F (8.6°C).

Humidity

September is the least humid month, with an average relative humidity of 54.5%.

Rainfall

In Valentine, in September, during 7.1 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Valentine, during the entire year, the rain falls for 87.9 days and collects up to 20.04" (509mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.71" (18mm) of snow. Throughout the year, there are 22.3 snowfall days, and 33.31" (846mm) of snow is accumulated.

Daylight

The average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:07 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:24 pm MDT.

Sunshine

In September, the average sunshine in Valentine is 8.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 in September translates into these instructions:
Guard against overexposure. Protection from sun-induced harm is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take note! UV radiation from the Sun can double in intensity due to snow reflection.

Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During September, Valentine experiences an average high-temperature of 77.4°F (25.2°C) and a low-temperature of 47.5°F (8.6°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 91.4°F (33°C).

September is the least humid month, with an average relative humidity of 54.5%.

In Valentine, the average relative humidity in September is 54.5%.

In September, the rain falls for 7.1 days. Throughout September, 1.65" (42mm) of precipitation is accumulated.

September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.71" (18mm) of snow.

The average day length in September is 12h and 29min.

In September, on the first day of the month, sunrise is at 6:07 am and sunset at 7:16 pm. On the last day of the month, in Valentine, sunrise is at 6:39 am and sunset at 6:24 pm MDT.

The average sunshine duration in September is 8.8h.

In Valentine, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

87°F

77.3°F

63°F

Average low temperature

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average UV index

Average temperature in September
Valentine, NE

Average high temperature in September: 77.3°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (36.5°F).

Average low temperature in September: 47.4°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.7°F).

Average humidity in September
Valentine, NE

Average humidity in September: 54.5%

The month with the highest relative humidity is February (64.6%).
The month with the lowest relative humidity is September (54.5%).

Average rainfall in September
Valentine, NE

Average rainfall in September: 1.6"

The wettest month (with the highest rainfall) is June (3.6").
The driest month (with the least rainfall) is January (0.3").

Average rainfall days in September
Valentine, NE

Average rainfall days in September: 7.1 days

The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (3.9 days).

Average snowfall in September
Valentine, NE

Average snowfall in September: 0.7"

The month with the highest snowfall is March (6.5").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Valentine, NE

Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is March (4.6 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in September /
Average sunshine in September
Valentine, NE

Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

Average sunshine in September: 8h and 48min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).