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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

80°F

UV Index
1 Low
Pressure
30.09 Steady
Visibility
8 miles
Dewpoint
36 °F
Humidity
20%
Wind
ESE 3.2 mph
Gust
7.6 mph
Wind Chill
80 °F

Hourly Forecast

Today
7 PM
76°F
Intermittent clouds
Today
8 PM
72°F
Mostly clear
Today
9 PM
69°F
Mostly clear
Today
10 PM
65°F
Mostly clear
Today
11 PM
62°F
Clear
Tomorrow
12 AM
59°F
Clear
Tomorrow
1 AM
57°F
Clear
Tomorrow
2 AM
56°F
Clear
Tomorrow
3 AM
55°F
Clear
Tomorrow
4 AM
54°F
Partly cloudy
Tomorrow
5 AM
53°F
Intermittent clouds
Tomorrow
6 AM
51°F
Mostly cloudy

7 Day Forecast

Partly sunny

Monday

86 °F

Warmer with sunshine mixing with some clouds


Partly cloudy

Monday Night

51 °F

Partly cloudy


Partly sunny w/ t-storms

Tuesday

76 °F

Not as warm with times of clouds and sun; a thunderstorm in the area in the afternoon; thunderstorms can bring localized damaging wind gusts


Mostly cloudy w/ t-storms

Tuesday Night

51 °F

A thunderstorm in the evening; otherwise, increasing clouds


Mostly cloudy w/ t-storms

Wednesday

68 °F

Some sun, then turning cloudy with a couple of thundershowers in the afternoon


Partly cloudy w/ t-storms

Wednesday Night

47 °F

A couple of showers and a thunderstorm in the evening; otherwise, clearing


Mostly sunny

Thursday

72 °F

Mostly sunny and pleasant


Clear

Thursday Night

47 °F

Clear


Sunny

Friday

81 °F

Sunshine


Mostly clear

Friday Night

47 °F

Mainly clear


Sunrise and Sunset

Sunrise
6:41 AM
Sunset
7:09 PM

Based on AccuWeather data