September weather in Riverside California To get a good overview of the type of weather you can expect in September in Riverside, we will look at the day and night temperature, minimum and maximum water temperature, and if September is comfortable or humid Generally, September in Riverside will be quite hot. Historical data shows that you can expect an average temperature of around 95°F / 35°C. But due to the very dry air, it can feel somewhat uncomfortable for some people. During the night, it will cool down to around 68°F / 20°C. Riverside does not have a lot of rainy days in September. You can expect around 2 rainy days, with on average 0.2 inches / 4 mm of rain during the whole month.
The forecast for September 2024 is based on historical data and are averages. They will give a good indication what you can expect, but the daily temperature and rain will fluctuate during the month.
September weather in Riverside California in more detail To get a better feeling for the type of weather, you can expect in September in Riverside, we will look at the temperature, rain, wind, humidity, water temperature, and sun and clouds- What will the temperature be in Riverside in September Generally, you can expect in September an average temperature of 95°F / 35°C during the day and an average of 68°F / 20°C during the night. In September, during the warmest part of the afternoon, the temperature can often get as high as 104°F / 40°C, and at the end of the night, it can get as low as 53°F / 12°C.
When looking at the whole year, December is the coldest month, with an average temperature of around 66°F / 19°C. July and August are the hottest months, with an average temperature of around 98°F / 37°C. When comparing September with the temperature in the month before and after, this is almost equal to August, which sees an average maximum temperature of around 98°F / 37°C. And more than October, which sees an average maximum temperature of around 84°F / 29°C.
Day and night temperature variation for Riverside during the year. Day and night temperature variation for Riverside during the year.
But average temperatures only tell half of the story. It is also good to check the maximum and minimum temperatures. When looking at the whole year, July is the hottest month, with a temperature of around 109°F / 43°C. December is the coldest month, with a temperature of around 78°F / 26°C. When comparing September with the temperature in the month before and after, this is almost equal to August, which sees an average maximum temperature of around 107°F / 42°C. And slightly more than October, which sees an average maximum temperature of around 96°F / 36°C.
In the following graph, you can see how many cold and hot days you can expect in Riverside each month:
Day and night temperature variation for Riverside during the year. Day and night temperature variation for Riverside during the year.
- Can you expect rain in September in Riverside? Generally, you can expect about 2 rain days in September, with on average 0.2 inches / 4 mm of rain.
When looking at the whole year, June is the dryest month, with an average rainfall of around 0 inches / 1 mmmm. February is the wettest month, with an average rainfall of around 2.4 inches / 61 mmmm. When comparing September with the month before and after, this is almost equal to August, which sees around 0.2 inches / 5 mm of rain. And less than October, which sees around 0.5 inches / 13 mm of rain
Rain days for Riverside during the year. Rain days for Riverside during the year.
If we look at the number of days with rain, June is the month with the least amount of rain days with an average of between 0 and 1 days. February is the month with the most rain days with around 7 days. When comparing September with the month before and after, this is almost equal to August, which sees an average of between 1 and 2 days of rain. And almost equal to October, which sees an average of between 2 and 3 days of rain
- What will the water temperature be in Riverside for September You can expect in September, the water temperature for Riverside to be between 69°F / 21°C and 62°F / 17°C.
To compare the water temperature we will use the maximum water temperature. You can expect this temperature on a more sunny day, close to the shore, when the wind does not mix the relatively warmer and colder water. July has the highest water temperature, with around 69°F / 21°C. February has the lowest water temperature, with around 60°F / 16°C. When comparing the water temperature from September with the month before and after, September has a water temperature almost equal to August, with a water temperature of around 69°F / 21°C. And almost equal to the water temperature from October, that is an average of between 66°F / 19°C and 68°F / 20°C.
Water temperature for Riverside during the year. Water temperature for Riverside during the year.
- Can you expect in September a lot of sunny days in Riverside Generally, you can expect around 24 sunny days in September and around 6 partly sunny days. The remaining days will be cloudy.
When looking at the whole year, June is the month with the highest number of sunny days, with around 26 sunny days. February is the month with the lowest number of sunny days, with an average of between 10 and 11 sunny days. When comparing September with the number of sunny days in the month before and after, it is slightly lower than August, with an average of between 25 and 26 sunny days. And almost equal to October, with an average of between 22 and 23 sunny days
The number of sunny, partly sunny, and cloudy days for Riverside The number of sunny, partly sunny, and cloudy days for Riverside
We have looked at the sunny days in Riverside. Let's also look at the cloudy or overcast days. February is the month with the highest number of cloudy days, with around 5 cloudy days. June and August And are the months with the lowest number of cloudy days, with around 0 cloudy days. When comparing September with the number of cloudy days in the month before and after, it is almost equal to August, with around 0 cloudy days. And almost equal to October, with an average of between 0 and 1 cloudy days
- Will it be comfortable in September in Riverside? Generally, September in Riverside will have very dry air, and can feel somewhat uncomfortable for some people. But will be fine for most..
We use the humidity and temperature in Riverside to calculate the Wintersun Expert Comfort level for each month. The lower the Wintersun Expert Comfort level, the more comfortable it will be. Only for certain people, extremely dry air can feel slightly uncomfortable. When looking at the whole year, November has the lowest humidity, with a Wintersun Expert comfort level of "comfortable" (very dry air). June has the highest humidity, with a Wintersun Expert comfort level of "very comfortable" (low humidty). When comparing September with the month before and after, this is slightly less than August, which has a Wintersun Comfort level of "very comfortable" (dry air). And slightly more than October, which has a Wintersun Comfort level of "comfortable" (very dry air)
Wintersun Expert Humidity / Comfort level for Riverside Wintersun Expert Humidity / Comfort level for Riverside
What to do in Riverside California in September Riverside has a lot to offer its visitors. Some of the places you ought to visit are listed below:
California Citrus State Historic Park is a park and an open-air museum that gives a glimpse into the history of how the region became the birthplace of California Citrus Industry.Parent Washington Navel Orange Tree is a historic landmark of Riverside located at the corner of Magnolia and Arlington Streets. It is the last of the two original 'navel orange trees' brought from Brazil to the United States in 1870.Museums like Heritage House Museum , Riverside Metropolitan Museum , March Field Air Museum , and Riverside Art Museum are a must-visit if you are interested in the history, culture, and arts that dominated the region throughout history.Fairmount Park is a beautiful park with lakes and rose gardens. It was designed by the firm founded by Frederick Law Olmsted , which had also designed New York's Central Park. The park is home to many species of birds.Mount Rubidoux is a well-known city landmark and it has many trails for hiking and cycling. The views from the top are amazing. This foothill also divides the line between the town of Rubidoux and the city of Riverside.Mission Inn Hotel and Spa is a National historic landmark of the city because it is considered as one of the most luxurious hotels and a historically rich place in the United States.Lake Mathews is a large water reservoir that is fed through water canals and is a great site for picnics.Jurupa Mountains Discovery Center is a large outdoor facility that offers a natural and wildlife-based experience to its visitors.Is it humid in Riverside California in September? A lot of people ask interested in the humidity or relative humidity for Riverside California in September. But the real question they want to ask is not about humidity but the amount of moisture in the air. Or better, about comfort. Will it be comfortable in September in Riverside, or will high humidity make it uncomfortable. To answer this question, we have to look at the dew point. Relative humidity can change a lot in Riverside during the day and night, as it changes when the amount of moisture changes and, but also when the temperature changes. It is a lot less reliable for comfort. Where the dew point only varies with the amount of moisture in the air.Looking at the dew point, we can see that for the month of September, you can expect that Riverside will have very dry air, and can feel somewhat uncomfortable for some people. But will be fine for most..
November is the month with the most comfort. It will have very dry air, and can feel somewhat uncomfortable for some people. But will be fine for most.. June is the most uncomfortable month. It will have a low humidty, and will feel very comfortable. In the graph, you can see that there is a significant difference between the most comfortable and most uncomfortable months
Humidity level for Riverside Humidity level for Riverside
Is September a good time to go to Riverside California? Trying to answer the question of whether September is a good time to go to Riverside is not as easy as it first seems. Some people like colder weather, and others prefer a warmer climate. Some are fine with some humidity, and others are not. If your location has air conditioning, the night temperature is less important. These are some examples. I will try to answer the question with a more generic person in mind. The more detailed information in this article should be enough to check further if this applies to you as well.
If we look at the average temperature for Riverside in September, we can see that it will be too hot for a lot of visitors. In September, you can expect it to be quite hot, with an average temperature of around 95°F / 35°C. But due to the very dry air, it can feel somewhat uncomfortable for some people. During the night, it will be around 68°F / 20°C. As the number of overcast days is not high, you can enjoy the sun with around 24 sunny days and 6 partly sunny days. The last aspect we will look at is rain. You can expect around 2 rainy days, with on average 0.2 inches / 4 mm of rain during September. If it were more than five days, the location would be slightly less attractive for a shorter stay. We have looked at the average day temperature, the night temperature, humidity, the number of overcast days, and the rain. We think that September in Riverside California is not the most optimal destination. But that doesn't mean it is not a good time for you to go. As said before, each visitor has their own preferences when it comes to the weather.
Does it rain all day in Riverside California in September?
In Riverside, it does not rain all day in September. You can expect around 2 rainy days, with on average 0.2 inches / 4 mm of rain during the month. Another way of looking at the rain is the number of sunny days. For Riverside California, there are, on average 24 sunny days and 6 partly sunny days in September. That clearly shows that it is not raining all the time.
Is September the rainiest month in Riverside California? September is not the month with the most rainy days, and not the month with the most rain. To answer what the rainiest month is in Riverside, we will both look at the month with the most rain, and the month with the highest number of rainy days. February is the month with the the highest number of rainiest days. On average, you can expect 7 days with rain. June is the month with the lowest number of rainy days, with aproximately 1 day. February is the month with the most rain. This is not equal as the one with the most rainy days. On average, you can expect 2.4 inches / 61 mm of rain. June is the month with the least amount of rain. This is not the same month as the one with the lowest number of rainy days. You can expect approximately 0 inches / 1 mm of rain.
Is September the most sunniest month in Riverside California? September is not the month with the most sunny days, not the month with the most partly sunny days, and it is not the month with the lowest number of overcast days. To answer what the sunniest month is in Riverside, we will of course look at the month with the most sunniest days, but also look at the month with the biggest number of days that are sunny or partly sunny. June is the month with the highest number of sunny days. On average, you can expect 24 sunny days, and 6 partly suny days. February is the month with the lowest number of sunny days. August is the month with the highest number of sunny days and partly sunny days combined. While February is the month with the lowest number of sunny days and partly sunny days combined. The last thing we will look at is the number of overcast days. June and August are the months with the lowest number of overcast days. While February is the month with the highest number of overcast days.
More information about Riverside California Weather in Riverside California in other months What to do in Riverside California for each month