September Weather in Valentine, United States

Last updated: June 24, 2025

In Valentine, United States, the average temperature in September hovers around 19°C (66°F). Expect a wide range, with minimums dipping to 1°C (35°F) and maximums soaring up to 37°C (99°F). During this month, rainfall typically accumulates to 49 mm (1.9 in) over about 5 days, while the humidity averages a comfortable 72%. Embrace the variability of the season!

September Temperature in Valentine

In September in Valentine, the average temperature is 19°C (66°F). The maximum can reach 37°C (99°F), while the minimum can dip as low as 1°C (35°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack layers for varying weather conditions.

September Weather in Valentine: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Valentine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valentine, September typically has an average temperature of 19°C (66°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (35°F).

Data source: Temperature data for Valentine generated using information from the Copernicus Climate Change Service.

September Precipitation in Valentine

In Valentine in September, the precipitation amount is 49 mm (1.9 in) spread over a period of 5 days.

September Precipitation Trends in Valentine

The chart displays monthly precipitation patterns in Valentine, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Valentine, September typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Valentine

In Valentine in September, humidity is 72%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace that can make even the lightest activities feel strenuous for traveling.

September Average Humidity in Valentine

This chart illustrates the average monthly humidity levels in Valentine, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Valentine is approximately 72%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Valentine

In Valentine in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Valentine.

Maximum UV Index Levels in Valentine for September

The chart shows the monthly maximum UV Index (UVI) for Valentine in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Valentine typically reaches 8, which falls under the very high exposure category.

Data source: Valentine September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Valentine Compares to Other Months

Weather in Valentine varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Valentine, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Valentine, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	19 mm (0.7 inches)	74%	moderate
February Weather	-5°C (23°F)	23 mm (0.9 inches)	79%	moderate
March Weather	2°C (36°F)	64 mm (2.5 inches)	65%	high
April Weather	7°C (44°F)	60 mm (2.3 inches)	69%	very high
May Weather	14°C (57°F)	109 mm (4.3 inches)	75%	very high
June Weather	22°C (71°F)	68 mm (2.7 inches)	84%	extreme
July Weather	24°C (76°F)	79 mm (3.1 inches)	84%	very high
August Weather	22°C (72°F)	69 mm (2.7 inches)	83%	very high
September Weather	19°C (66°F)	49 mm (1.9 inches)	72%	very high
October Weather	8°C (47°F)	58 mm (2.3 inches)	68%	moderate
November Weather	3°C (38°F)	18 mm (0.7 inches)	75%	moderate
December Weather	-2°C (29°F)	32 mm (1.3 inches)	73%	moderate