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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

Clear

Clear

62°F

UV Index
0 Low
Pressure
29.7 Steady
Visibility
8 miles
Dewpoint
35 °F
Humidity
36%
Wind
SSE 3.1 mph
Gust
4.9 mph
Wind Chill
62 °F

Hourly Forecast

Today
1 AM
60°F
Clear
Today
2 AM
58°F
Clear
Today
3 AM
57°F
Clear
Today
4 AM
55°F
Clear
Today
5 AM
54°F
Clear
Today
6 AM
53°F
Sunny
Today
7 AM
57°F
Mostly sunny
Today
8 AM
64°F
Partly sunny
Today
9 AM
71°F
Partly sunny
Today
10 AM
75°F
Partly sunny
Today
11 AM
79°F
Partly sunny
Today
12 PM
82°F
Partly sunny

7 Day Forecast

Sunny

Monday

88 °F

Sunny and very warm with the temperature approaching the record of 91 set in 1962


Clear

Monday Night

53 °F

Clear


Partly sunny

Tuesday

88 °F

Very warm with partial sunshine; breezy in the afternoon


Clear

Tuesday Night

50 °F

Breezy in the evening; otherwise, clear


Partly sunny w/ showers

Wednesday

73 °F

Cooler with sunshine giving way to clouds, becoming windy with a shower in the area in the afternoon; elevated fire risk due to gusty winds and low humidity


Cloudy

Wednesday Night

46 °F

Overcast


Intermittent clouds

Thursday

71 °F

Beautiful with intervals of clouds and sunshine


Mostly cloudy

Thursday Night

43 °F

Cloudy most of the time


Intermittent clouds

Friday

71 °F

Beautiful with times of clouds and sun


Intermittent clouds

Friday Night

45 °F

Partly cloudy


Sunrise and Sunset

Sunrise
5:48 AM
Sunset
8:06 PM

Based on AccuWeather data