September Weather in Blair, United States

Last updated: June 24, 2025

In September, the average temperature in Blair, United States is a pleasant 24°C (76°F). Visitors can expect a minimum temperature of around 8°C (46°F) and a maximum soaring to 38°C (100°F). This month typically sees 84 mm (3.3 in) of precipitation spread over 6 days, contributing to an average humidity of 64%. Perfect for those who enjoy a balance of warmth and occasional refreshing showers!

September Temperature in Blair

In September in Blair, the average temperature is 24°C (76°F). Maximums can reach 38°C (100°F) and minimums can drop to as low as 8°C (46°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates September temperature patterns in Blair, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blair, September typically has an average temperature of 24°C (76°F), with highs reaching up to 38°C (100°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in Blair

In Blair in September, the precipitation amount is 84 mm (3.3 in) accumulated over the course of 6 days.

September Precipitation Trends in Blair

The chart displays monthly precipitation patterns in Blair, 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 Blair, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 6 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 Blair

In Blair in September, humidity is 64%. With an average temperature of 24°C (76°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable but still enjoyable, as you may find yourself yearning for a refreshing breeze or a quick dip in the water.

September Average Humidity in Blair

This chart illustrates the average monthly humidity levels in Blair, 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 Blair is approximately 64%, 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 Blair

In Blair in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Blair.

Maximum UV Index Levels in Blair for September

The chart shows the monthly maximum UV Index (UVI) for Blair 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 Blair typically reaches 10, which falls under the very high exposure category.

Data source: Blair 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 Blair Compares to Other Months

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

This table compares monthly weather conditions in Blair, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (40°F)	36 mm (1.4 inches)	76%	moderate
February Weather	5°C (42°F)	27 mm (1.0 inches)	76%	high
March Weather	13°C (55°F)	64 mm (2.5 inches)	70%	very high
April Weather	16°C (61°F)	83 mm (3.3 inches)	72%	very high
May Weather	22°C (71°F)	125 mm (4.9 inches)	82%	extreme
June Weather	27°C (81°F)	66 mm (2.6 inches)	82%	extreme
July Weather	29°C (85°F)	29 mm (1.1 inches)	80%	extreme
August Weather	28°C (83°F)	36 mm (1.4 inches)	72%	extreme
September Weather	24°C (76°F)	84 mm (3.3 inches)	64%	very high
October Weather	17°C (63°F)	74 mm (2.9 inches)	71%	high
November Weather	11°C (51°F)	19 mm (0.8 inches)	81%	moderate
December Weather	7°C (45°F)	26 mm (1.0 inches)	84%	moderate