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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

Sunny

Sunny

47°F

UV Index
1 Low
Pressure
30.24 Steady
Visibility
9 miles
Dewpoint
44 °F
Humidity
90%
Wind
NW 1.1 mph
Gust
2.1 mph
Wind Chill
47 °F

Hourly Forecast

Today
8 AM
45°F
Mostly sunny
Today
9 AM
49°F
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10 AM
53°F
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Today
11 AM
57°F
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Today
12 PM
63°F
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1 PM
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Today
2 PM
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Today
3 PM
74°F
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4 PM
76°F
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5 PM
75°F
Mostly sunny
Today
6 PM
74°F
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Today
7 PM
69°F
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7 Day Forecast

Mostly sunny

Thursday

76 °F

Mostly sunny and pleasant


Clear

Thursday Night

45 °F

Clear


Sunny

Friday

82 °F

Plenty of sunshine


Mostly cloudy

Friday Night

52 °F

Increasing clouds


Partly sunny

Saturday

83 °F

Partly sunny


Mostly clear

Saturday Night

53 °F

Clear to partly cloudy


Partly sunny

Sunday

86 °F

Partial sunshine


Mostly clear

Sunday Night

50 °F

Mainly clear


Partly sunny

Monday

76 °F

Partial sunshine; pleasant in the morning, then turning breezy


Clear

Monday Night

43 °F

Clear


Sunrise and Sunset

Sunrise
6:44 AM
Sunset
7:04 PM

Based on AccuWeather data