Forecast by Meteorologist Becky Ditchfield

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TODAY:  Cooler, more humid air will keep us far below record setting highs. The unstable air will also bring a chance of moderate to heavy storms from 4 p.m. to 9 p.m.

Storm outlook 8-21-2019
9NEWS weather

There is a chance for these storms all along the I-25 corridor. Current model runs suggest storms initiate along the Palmer Divide, near Castle Rock, around 4 p.m.

Wednesday thunderstorm forecast 4pm

Storms are more likely near the Denver metro area by 6 p.m.

Wednesday thunderstorm forecast 6pm

Most thunderstorm activity will be on the eastern plains by 9 p.m.

Wednesday thunderstorm forecast 9pm

However, the storms will not clear the state until the overnight.

Thursday thunderstorm forecast 2:30am

**Please keep in mind that these times and storm locations are approximate. For your safety outdoors, be on the lookout for strong storms between 4 p.m. and 9 p.m. along the Front Range today.

These storms could contain large hail, damaging winds, a lot of lightning and brief periods of heavy rain. 

>> See the latest severe weather alerts

WEDNESDAY:  Much more humid, cloudy and cooler with afternoon and evening thunderstorms.  Locally heavy rain is possible. An Isolated severe storm is possible.  Morning lows from 56° to 61°, afternoon highs from 79° to 84°.

Denver forecast 8-21-2019
9NEWS weather

RAIN POTENTIAL:  Some of the storms during the evening may also bring us locally heavy rain up to 1 inch or more.  Storms are expected to be possible until at least 10 p.m.  

Rain potential 8-21-2019
9NEWS weather

AIR QUALITY:  Cooler, stormy conditions will keep our air quality in pretty good shape during the day today.

AQI 8-21-2019
9NEWS weather

THURSDAY:  Party cloudy with a chance for an isolated weak thunderstorm mainly during the evening.  Morning lows from 53° to 57°, afternoon highs from 84° to 89°.

Denver forecast tomorrow 8-21-2019
9NEWS weather

FRIDAY:  Mostly sunny with a chance for a gusty thunderstorm in the afternoon.  Morning lows from 57° to 62°, afternoon highs from 83° to 88°.

SATURDAY:  Sunny, windy and hot.  Morning lows from 58° to 63°, afternoon highs from 90° to 95°.

SUNDAY:  Sunny, windy and very hot.  Morning lows from 63° to 67°, afternoon highs from 95° to 99°.

MONDAY:  Sunny, windy and very hot.  Morning lows from 64° to 69°, afternoon highs from 93° to 98°.

TUESDAY:  Partly cloudy and hot during the day.  Windy and cooler with thunderstorms for the evening.  Morning lows from 64 to 67, afternoon highs from 91 to 95.  

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The 9NEWS Weather team of Marty Coniglio, Kathy Sabine, Becky Ditchfield, Danielle Grant and Kylie Bearse update the Denver weather forecast multiple times each day. Bookmark this link to always have the latest forecast from 9NEWS. The team values your local weather reports and often features your photos and videos during weather segments in all newscasts.