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Thursday Update: Longmont Weather Forecast: Mild and Dry for the Next Week

Figure2_11222021
Figure 2: the 500mb upper air map for Tuesday noon from tropicaltidbits.com

In Brief:

Dry mild weather continues for the next week.

Thursday/ Black Friday Update:

Friday will be VERY mild with highs in the upper 60's and lows around freezing.  The next week still looks warm and quiet.  Have fun Christmas shopping!

End Update.

Forecast Discussion:

Things continue to remain calm and unusually warm for the next 10 days (Figure 1). A cold front pushes down Tuesday afternoon with gusty winds (prompting elevated fire danger) and will cool us down to just a few degrees above normal instead of the almost 20 degrees above normal weather we have for the rest of the forecast period. A big ridge over the western states is to blame for all this dry warmth (Figure 2).

Thanksgiving Forecast:

We will be warming up after the cold front passage and will have dry clear weather with highs approaching 60F again with only near freezing temperatures at night. No travel problems at all!

Figure1_11222021
Figure 1: the 10 day graphical forecast for Longmont from weatherunderground.com

 

Figure2_11222021
Figure 2: the 500mb upper air map for Tuesday noon from tropicaltidbits.com

The Longer-Range Forecast:

Over the next 10 days, very little rain or snow is expected to fall on Colorado, however, a major winter storm with a few days of heavy snow and bitter cold temperatures is appearing around Dec. 4-6 on the long range models.  I won't map it out until we get closer (a model storm that far out can completely vanish by the time the date approaches). We are now setting the record for the latest recorded measurable snowfall in Denver.

 

Figure3_11222021
Figure 3: the 10 day precipitation total for Colorado from weather5280.com
Figure4_11222021
Figure 4: the 10 day snow total (10:1 ratio) total for Colorado 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

Cloudy

Cloudy

70°F

UV Index
4 Moderate
Pressure
30.21 Falling
Visibility
6 miles
Dewpoint
60 °F
Humidity
69%
Wind
NE 1.7 mph
Gust
3.7 mph
Wind Chill
70 °F

Hourly Forecast

Today
12 PM
73°F
Mostly cloudy
Today
1 PM
76°F
Mostly cloudy
Today
2 PM
78°F
Mostly cloudy
Today
3 PM
80°F
Mostly cloudy
Today
4 PM
82°F
Mostly cloudy
Today
5 PM
84°F
Intermittent clouds
Today
6 PM
82°F
Intermittent clouds
Today
7 PM
79°F
Intermittent clouds
Today
8 PM
77°F
Intermittent clouds
Today
9 PM
73°F
Partly cloudy
Today
10 PM
69°F
Partly cloudy
Today
11 PM
65°F
Intermittent clouds

7 Day Forecast

Mostly cloudy

Saturday

84 °F

Clouds and breaks of sun; smoke from area fires will lead to poor air quality


Partly cloudy

Saturday Night

58 °F

Partly cloudy


Partly sunny w/ showers

Sunday

94 °F

Partly sunny with a passing shower in the afternoon


Partly cloudy

Sunday Night

61 °F

Partly cloudy


Mostly cloudy

Monday

91 °F

Considerable cloudiness


Mostly clear

Monday Night

60 °F

Clear to partly cloudy


Intermittent clouds

Tuesday

92 °F

Sun through high clouds


Partly cloudy

Tuesday Night

58 °F

Partly cloudy


Intermittent clouds

Wednesday

84 °F

Not as warm with times of clouds and sun; a thunderstorm in spots in the afternoon


Intermittent clouds

Wednesday Night

58 °F

An evening thunderstorm; otherwise, partly cloudy


Sunrise and Sunset

Sunrise
5:41 AM
Sunset
8:30 PM

Based on AccuWeather data