September Weather in Spencer, United States

Last updated: June 24, 2025

In September, the average temperature in Spencer, United States is a comfortable 19°C (66°F). However, temperatures can swing between a chilly 3°C (38°F) and a warm 33°C (91°F). Expect 112 mm (4.4 in) of precipitation across 9 days, contributing to an average humidity of 75%—making for a rather humid atmosphere!

September Temperature in Spencer

In September in Spencer, the average temperature is 19°C (66°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 3°C (38°F). This climate makes Spencer an ideal destination for travelers seeking a mix of warm and cool experiences.

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

The chart illustrates September temperature patterns in Spencer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Spencer, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Spencer

In Spencer in September, the total precipitation amount is 112 mm (4.4 in), occurring over a span of 9 days.

September Precipitation Trends in Spencer

The chart displays monthly precipitation patterns in Spencer, 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 Spencer, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Spencer

In Spencer in September humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

September Average Humidity in Spencer

This chart illustrates the average monthly humidity levels in Spencer, 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 Spencer is approximately 75%, 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 Spencer

In Spencer 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 Spencer.

Maximum UV Index Levels in Spencer for September

The chart shows the monthly maximum UV Index (UVI) for Spencer 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 Spencer typically reaches 8, which falls under the very high exposure category.

Data source: Spencer 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 Spencer Compares to Other Months

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

This table compares monthly weather conditions in Spencer, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	29 mm (1.2 inches)	80%	moderate
February Weather	-7°C (19°F)	36 mm (1.4 inches)	84%	moderate
March Weather	2°C (35°F)	69 mm (2.7 inches)	75%	moderate
April Weather	7°C (45°F)	101 mm (4.0 inches)	79%	very high
May Weather	15°C (60°F)	134 mm (5.3 inches)	74%	very high
June Weather	22°C (73°F)	133 mm (5.2 inches)	81%	extreme
July Weather	24°C (75°F)	80 mm (3.1 inches)	82%	very high
August Weather	22°C (71°F)	105 mm (4.2 inches)	80%	very high
September Weather	19°C (66°F)	112 mm (4.4 inches)	75%	very high
October Weather	9°C (49°F)	90 mm (3.5 inches)	77%	moderate
November Weather	2°C (35°F)	32 mm (1.2 inches)	85%	moderate
December Weather	-3°C (27°F)	40 mm (1.6 inches)	83%	moderate