A blue moon: Not so rare in 2018

Posted: Updated:
PHOENIX (3TV/CBS 5) -

Blue moons typically occur once every 2.8 years. And that's what started the term “once in a blue moon.” 

A blue moon is a second full moon in a calendar month. Well, they are not so rare in 2018! It will happen twice this year and in just a few months.    

Our last blue moon happened on January 31, and the next one will happen this Saturday during Easter weekend. 

[READ MORE: Blue moon, supermoon, total lunar eclipse rolled into one]

We will have to wait until Halloween of 2020 for the next blue moon.   

[SPECIAL SECTION: Arizona's Family Weather Blogs]

Every full moon also has a name, and there are two names for this moon. Some call it the Worm Moon, because earthworms show up with the warmer spring temperatures.  It is also called the Sap Full Moon, a time of year that sap is collected from trees to make syrup.

We may see a few clouds this weekend if you want to check it out, but it will be comfortable at night. Highs this weekend will top out near 90, with evening temperatures in the 70s. 

[SLIDESHOW: Super blue blood moon fills sky]

Have a great Easter weekend.  

Click/tap here to download the free azfamily mobile app.

Copyright 2018 KPHO/KTVK (KPHO Broadcasting Corporation). All rights reserved.


  • Arizona's Family Weather BlogMore>>

  • The 5 best things about the Arizona monsoon

    The 5 best things about the Arizona monsoon

    Thursday, June 14 2018 4:10 PM EDT2018-06-14 20:10:51 GMT
    (Source: 3TV/CBS 5)(Source: 3TV/CBS 5)
    (Source: 3TV/CBS 5)(Source: 3TV/CBS 5)

    Five Best Things About the Monsoon  It's that time of the year again! The Arizona Monsoon starts Friday and boy are we excited. Here are the top five best things about the monsoon in Arizona.  

    More >

    Five Best Things About the Monsoon  It's that time of the year again! The Arizona Monsoon starts Friday and boy are we excited. Here are the top five best things about the monsoon in Arizona.  

    More >
  • Get excited! Monsoon hints rumbling to our south

    Get excited! Monsoon hints rumbling to our south

    Wednesday, June 6 2018 5:17 PM EDT2018-06-06 21:17:38 GMT
    (Source: 3TV/CBS 5)(Source: 3TV/CBS 5)
    (Source: 3TV/CBS 5)(Source: 3TV/CBS 5)

    This week, storms started to fire over the Sierra Madre, the mountain range on the western side of the Mexican plateau. 

    More >

    This week, storms started to fire over the Sierra Madre, the mountain range on the western side of the Mexican plateau. 

    More >
  • Heat Warnings: What you need to know

    Heat Warnings: What you need to know

    Tuesday, June 5 2018 7:24 PM EDT2018-06-05 23:24:25 GMT

    Arizona's notorious summer heat has arrived. We hit 110 degrees for the first time this year earlier this week, and more toasty temps are in the forecast.

    More >

    Arizona's notorious summer heat has arrived. We hit 110 degrees for the first time this year earlier this week, and more toasty temps are in the forecast.  

    More >
  • Featured VideoMore>>

  • Parents of Apache Junction teen left in ICU after fatal I-40 wrong-way crash speak out

    Parents of Apache Junction teen left in ICU after fatal I-40 wrong-way crash speak out

    Tuesday, June 19 2018 9:59 AM EDT2018-06-19 13:59:26 GMT
    When her parents got there, they couldn’t believe how bad of shape 16-year-old Meckensy Toro was in. (Source: 3TV/CBS 5)When her parents got there, they couldn’t believe how bad of shape 16-year-old Meckensy Toro was in. (Source: 3TV/CBS 5)
    (Source: 3TV/CBS 5)(Source: 3TV/CBS 5)

    Last week, 16-year-old Meckensy Toro celebrated her birthday, and this week, she's celebrating being alive in the ICU, because this past Saturday was almost her last.

    More >

    Last week, 16-year-old Meckensy Toro celebrated her birthday, and this week, she's celebrating being alive in the ICU, because this past Saturday was almost her last.

    More >
  • Shipping mix-up means 2 special children get needed wheelchairs

    Shipping mix-up means 2 special children get needed wheelchairs

    Tuesday, June 19 2018 9:58 AM EDT2018-06-19 13:58:56 GMT
    Parker and Jacqueline now both have wheelchairs to get around thanks to a shipping mix-up. (Source: 3TV/CBS 5)Parker and Jacqueline now both have wheelchairs to get around thanks to a shipping mix-up. (Source: 3TV/CBS 5)
    Parker and Jacqueline now both have wheelchairs to get around thanks to a shipping mix-up. (Source: 3TV/CBS 5)Parker and Jacqueline now both have wheelchairs to get around thanks to a shipping mix-up. (Source: 3TV/CBS 5)

    A missing wheelchair is returned, and now a second child has a chair, too, thanks to a shipping mix-up.

    More >

    A missing wheelchair is returned, and now a second child has a chair, too, thanks to a shipping mix-up.

    More >
  • Tax refund missing due to 'one digit off'

    Tax refund missing due to 'one digit off'

    Tuesday, June 19 2018 9:58 AM EDT2018-06-19 13:58:44 GMT
    Cristina Allen said she messed up putting in her bank account when filing her taxes and now she doesn't have her refund. (Source: 3TV/CBS 5)Cristina Allen said she messed up putting in her bank account when filing her taxes and now she doesn't have her refund. (Source: 3TV/CBS 5)
    Cristina Allen said she messed up putting in her bank account when filing her taxes and now she doesn't have her refund. (Source: 3TV/CBS 5)Cristina Allen said she messed up putting in her bank account when filing her taxes and now she doesn't have her refund. (Source: 3TV/CBS 5)

    An Arizona taxpayer typed in the wrong bank account number and didn't receive her tax refund.

    More >

    An Arizona taxpayer typed in the wrong bank account number and didn't receive her tax refund.

    More >