Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Baltimore in September experiences a gentle temperature dip, with average high-temperatures reducing from 81.3°F (27.4°C) in August to a still warm 75.6°F (24.2°C). In September, the average low-temperature records at a mild 56.3°F (13.5°C) during the nights.Humidity
The average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall in Baltimore. Rain falls for 12 days and accumulates 1.22" (31mm) of precipitation.Snowfall
May through October are months without snowfall in Baltimore.Daylight
In Baltimore, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:59 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow in Baltimore?
How many hours of daylight does Baltimore have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Baltimore have in September?
What is the UV index reading in September?
Average temperature in September
Baltimore, OH
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Baltimore, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Baltimore, OH
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
Baltimore, OH
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Baltimore, OH
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in September
Baltimore, OH
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in September
Baltimore, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Baltimore, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Baltimore, OH
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Baltimore, OH
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in September
Baltimore, OH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Baltimore, OH
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Baltimore, OH
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January and September (5mi).
Baltimore, Ohio, USA
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