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Mon Update: The Front Range Forecast: Hot, dry summer weather

In Brief:

A ridge builds overhead and we get a taste of hot, dry summer weather.  Thunderstorms will return.

Monday Update:

Interesting climatology from the National Weather Service. BUT - DIA only made it to 87F today.

High temperatures are expected reach the 90-degree mark in Denver for the first time this year. The last 90-degree day last year occurred on 9/20/2022, 272 days ago. Our first 90-degree day last year occurred on 5/11/2022. By this time last year, Denver had reached 90 degrees for the 10th time. In the mountains,
expect gusty west to southwest winds this afternoon, with gusts 35-50 mph possible at times above timberline.

End Monday update.

The Forecast Discussion:

We have a ridge, finally, building over the state starting Sunday (Figure 2). This will give us our first good chance of 90F+ weather! (Figure 1)  We see quiet weather in the southwest and intermountain West (Figure 2).

figure1_06172023
Figure 1: the 10 day graphical forecast for Denver from weaatherunderground.com
figure2_06172023
Figure 2: the 500mb upper air forecast map for Sunday night from the GFS and tropicaltidbits.com
figure3_06172023
Figure 3: the Sunday forecast surface map from the NWS

The Longer Range Forecast:

Starting Wednesday, moisture returns and afternoon storm chances pick up again (Figure 1). Over the next 10 days, the rain is mainly confined to the eastern Plains of Colorado (Figure 4).

figure4_06172023
Figure 4: the 10 day GFS rainfall forecast from weather5280.com

 


About the Author: John Ensworth

John Ensworth used to work from Longmont as the PI for the NASA through the IGES (The Institute for Global Environmental Strategies). He now teaches technology, algebra, astronomy, meteorology, film school, and Lego robotics to middle/high school.
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Current Weather

Sunny

Sunny

59°F

UV Index
6 High
Pressure
30.01 Steady
Visibility
8 miles
Dewpoint
45 °F
Humidity
60%
Wind
NE 2.8 mph
Gust
5.9 mph
Wind Chill
59 °F

Hourly Forecast

Today
11 AM
60°F
Intermittent clouds
Today
12 PM
61°F
Intermittent clouds
Today
1 PM
63°F
Intermittent clouds
Today
2 PM
64°F
Mostly cloudy w/ t-storms
Today
3 PM
65°F
Intermittent clouds
Today
4 PM
63°F
Intermittent clouds
Today
5 PM
61°F
Intermittent clouds
Today
6 PM
59°F
Intermittent clouds
Today
7 PM
56°F
Intermittent clouds
Today
8 PM
53°F
Cloudy
Today
9 PM
51°F
Cloudy
Today
10 PM
49°F
Cloudy

7 Day Forecast

Partly sunny w/ t-storms

Thursday

65 °F

Intervals of clouds and sunshine with widely separated thunderstorms this afternoon


Thunderstorms

Thursday Night

44 °F

A thundershower in spots this evening; otherwise, overcast


Thunderstorms

Friday

51 °F

A thick cloud cover and cooler; a passing shower in the morning followed by a thunderstorm in parts of the area in the afternoon


Mostly cloudy

Friday Night

45 °F

Low clouds breaking


Mostly cloudy w/ t-storms

Saturday

75 °F

Variable cloudiness with a thundershower; warmer


Clear

Saturday Night

43 °F

Clear


Partly sunny

Sunday

82 °F

Very warm with sunshine mixing with some clouds; elevated fire risk due to gusty winds and low humidity


Mostly clear

Sunday Night

46 °F

Mainly clear


Mostly cloudy

Monday

61 °F

Turning cloudy and cooler; a shower in spots in the afternoon


Intermittent clouds

Monday Night

39 °F

Clearing


Sunrise and Sunset

Sunrise
6:10 AM
Sunset
7:48 PM

Based on AccuWeather data