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 sea temperature 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
September experiences an average high-temperature of a still enjoyable 63.7°F (17.6°C), barely different from August's 66.2°F (19°C). Bay City reports a consistent average low-temperature of 53.6°F (12°C) throughout September nights.Humidity
The average relative humidity in September in Bay City is 82%.Rainfall
In September, in Bay City, the rain falls for 6.6 days. Throughout September, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 129.7 rainfall days, and 11.85" (301mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Ocean temperature
In September, the average ocean temperature in Bay City is 56.1°F (13.4°C).Note: Swimming in 56.1°F (13.4°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.
Daylight
The average length of the day in September in Bay City is 12h and 31min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:56 pm PDT.
Sunshine
In September, the average sunshine in Bay City is 9.1h.UV index
The average daily maximum UV index in September in Bay City is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Undertake protective steps - Preventing sun damage is advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are the temperatures in Bay City in September?
What is the average humidity in September in Bay City?
How many days does it rain in September in Bay City?
When it does not snow in Bay City?
What is the ocean temperature in September in Bay City?
How many hours of daylight does Bay City have in September?
When are sunrise and sunset in September in Bay City?
How many hours of sunshine does Bay City have in September?
What is the UV index intensity in September in Bay City?
Average temperature in September
Bay City, OR
- Average high temperature in September: 63.7°F
The warmest month (with the highest average high temperature) is August (66.2°F).
The month with the lowest average high temperature is December (46.2°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure in September
Bay City, OR
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and April (30.08"Hg).
The month with the lowest atmospheric pressure is September (30.02"Hg).
Average wind speed in September
Bay City, OR
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Bay City, OR
- Average humidity in September: 82%
The month with the highest relative humidity is August (83%).
The month with the lowest relative humidity is May (80%).
Average rainfall in September
Bay City, OR
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is December (2.13").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in September
Bay City, OR
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is August (4.4 days).
Average snowfall in September
Bay City, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Bay City, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Bay City, OR
- Average sea temperature in September: 56.2°F
The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).
Average daylight in September /
Average sunshine in September
Bay City, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in September
Bay City, OR
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (12.4 days).
Average UV index in September
Bay City, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in September
Bay City, OR
- Average cloud cover in September: 32
The months with the most cloud cover are January and March (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Bay City, OR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Bay City, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location
