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The Front Range Forecast: Cool with showers

In Brief:

The weather turns to Fall with almost daily showers and seasonably cool temperatures.

Forecast Discussion:

Cool fronts are arriving bringing chances of afternoon and evening showers (and a few thunderstorms) each day (Figure 1). This is being driving by a cut-off low to our north that won't move away for a few days (Figure 2). To the south of the low there will be widespread showers now and then (Figure 3).

Over the next five days, most locations around Longmont and Broomfield should receive 1/4th to 1/2 inch of water. No big news, but a nice change of season.

Figure1_09302022
Figure 1: the 10 day graphical forecast for Denver from weatherunderground.com
Figure2_09302022
Figure 2: the 500 mb upper air map from the GFS for Sunday PM from tropcaltidbits.com
Figure3_09302022
Figure 3: the 6 hour precipitation pattern for Sunday PM from the GFS and tropicaltidbits.com
Figure4_09302022
Figure 4: the 5 day rainfall total from the GFS and weather5280.com

 

The Longer Range Forecast:

Beyond the next five days, clouds and some rain chances remain each day (Figure 1). The mountains pick up more of the rain showers over the next 10 days than the low lands. For fun, you can see some higher elevation snow over the next five days (Figure 6) as well!

Figure5_09302022
Figure 5: the 10 day rainfall total from the GFS and weather5280.com
Figure6_09302022
Figure 6: the snowfall total map for the next 4 days from the GFS and tropicaltidbits.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

Mostly sunny

Mostly sunny

94°F

UV Index
3 Moderate
Pressure
29.89 Falling
Visibility
8 miles
Dewpoint
40 °F
Humidity
15%
Wind
ESE 2.8 mph
Gust
6.5 mph
Wind Chill
94 °F

Hourly Forecast

Today
5 PM
94°F
Partly sunny
Today
6 PM
92°F
Intermittent clouds
Today
7 PM
90°F
Intermittent clouds
Today
8 PM
86°F
Intermittent clouds
Today
9 PM
82°F
Intermittent clouds
Today
10 PM
79°F
Intermittent clouds
Today
11 PM
75°F
Intermittent clouds
Tomorrow
12 AM
72°F
Intermittent clouds
Tomorrow
1 AM
69°F
Intermittent clouds
Tomorrow
2 AM
68°F
Intermittent clouds
Tomorrow
3 AM
67°F
Intermittent clouds
Tomorrow
4 AM
66°F
Intermittent clouds

7 Day Forecast

Partly sunny

Thursday

96 °F

Very warm with sunshine mixing with some clouds


Intermittent clouds

Thursday Night

64 °F

Partly cloudy


Partly sunny w/ t-storms

Friday

89 °F

Partly sunny with a thundershower in spots in the afternoon


Clear

Friday Night

61 °F

Clear


Partly sunny

Saturday

93 °F

Partly sunny


Clear

Saturday Night

56 °F

Clear


Partly sunny

Sunday

89 °F

Partly sunny with a stray thunderstorm


Clear

Sunday Night

57 °F

Clear


Partly sunny

Monday

93 °F

Partly sunny


Clear

Monday Night

57 °F

Clear


Sunrise and Sunset

Sunrise
5:36 AM
Sunset
8:33 PM

Based on AccuWeather data