September weather forecastAmsterdam, OH

September

Weather in September

September, the first month of the autumn in Amsterdam, is still a warm month, with temperature in the range of an average high of 74.7°F (23.7°C) and an average low of 54.9°F (12.7°C).

Temperature

Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 81°F (27.2°C) in August to a still warm 74.7°F (23.7°C). During the month of September, the nighttime temperature falls to an average of 54.9°F (12.7°C).

Humidity

In September, the average relative humidity in Amsterdam is 79%.

Rainfall

September is the month with the least rainfall in Amsterdam. Rain falls for 14.3 days and accumulates 2.13" (54mm) of precipitation.

Snowfall

June through September are months without snowfall in Amsterdam.

Daylight

In Amsterdam, the average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 6:51 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:07 pm EDT.

Sunshine

In September, the average sunshine in Amsterdam is 8.2h.

UV index

The average daily maximum UV index in September in Amsterdam is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 4 during September, leads to the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in September, in Amsterdam, is 74.7°F (23.7°C) and the average low-temperature is 54.9°F (12.7°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 86°F (30°C).

In Amsterdam, the average relative humidity in September is 79%.

The month with the least rainfall in Amsterdam, Ohio, is September, when the rain falls for 14.3 days and typically collects 2.13" (54mm) of precipitation.

In Amsterdam, Ohio, during September, the rain falls for 14.3 days and regularly aggregates up to 2.13" (54mm) of precipitation.

In Amsterdam, Ohio, snow does not fall in June through September.

In Amsterdam, Ohio, in September, it doesn't snow. In October, it regularly snows.

The average day length in September in Amsterdam is 12h and 27min.

On the first day of September, sunrise is at 6:51 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:07 pm EDT.

In September, the average sunshine duration in Amsterdam is 8.2h.

In September, the average daily maximum UV index in Amsterdam, Ohio, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability 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

81°F

74.7°F

61.5°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.5mph

5.7mph

7.4mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

14.3

15.2

Average snowfall

0.04"

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.8

13.1

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Amsterdam, OH

Average high temperature in September: 74.7°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.4°F).

Average low temperature in September: 54.9°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

Average pressure in September
Amsterdam, OH

Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Amsterdam, OH

Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in September
Amsterdam, OH

Average humidity in September: 79%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and July (77%).

Average rainfall in September
Amsterdam, OH

Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is September (2.13").

Average rainfall days in September
Amsterdam, OH

Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (9.1 days).

Average snowfall in September
Amsterdam, OH

Average snowfall in September: 0"

The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Amsterdam, OH

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Amsterdam, OH

Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in September: 8h and 12min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).