Pedestrians race across a flooded 2nd Street just east of Park Avenue during a sudden rain storm on Wednesday.

As the 2022 monsoon came to a close Friday, Tucson saw a slightly below average season, missing the normal mark by an inch.

The Tucson International Airport, where the National Weather Service houses its official records, received a total of 4.67 inches of rain as of Friday morning. Monsoons in Tucson, which last from June 15 to Sept. 30, usually see 5.67 inches of rain.

Before the season started, the NWS had predicted it was going to be wetter than normal, but not like 2021’s record breaking season. Last year’s monsoon ended up being the third wettest on record, receiving a total of 12.79 inches of rain, the NWS said.

Although the airport saw a below average monsoon, the sporadic nature of the storms led other areas in Pima County to see a wetter season, the NWS said. Western Pima County saw an above average season while some areas in Eastern Pima County saw a normal amount of rainfall.

The NWS said that some areas really get hit while others are less lucky. This year, the airport was one of the less lucky areas. Though this season is below average, it is not as bad as past years. The NWS said the top 10 driest monsoons are all below 2.79 inches of rain.

Despite the slow start, storms began to pick up in August, making it the wettest month of the season. Throughout August, Tucson received 2.82 inches of rain. Typically, Tucson only sees 1.98 inches of rain during the month.

The Tucson monsoon brought on an evening lightning show throughout town on Aug. 23, 2022. Pascal Albright & Johanna Eubank / Arizona Daily Star

Thunderstorm activity slowed down in September, making it a below average month for precipitation. Tucson only received 0.54 inches of rain as of Friday morning.

Drought conditions in Pima County were also able to improve thanks to this year’s storms. In June, Pima County was classified as being in a severe drought due to below normal winter precipitation. According to the United States drought monitor, most of Pima County is now classified as abnormally dry.

Even though the monsoon has ended, storms are still expected throughout the weekend. Saturday is predicted to have a 30% chance of thunderstorms and Sunday has a 20% chance of storms, the NWS said.

As for the next three months, the NWS predicted that Tucson will be warmer and drier than usual. Throughout October, November and December, Tucson will likely see slightly below precipitation and above average temperatures.

These trends are also anticipated to continue through winter as La Niña is expected for a third year, the NWS said. La Niña has caused winters in Tucson to be drier and warmer for the past few years.


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