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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

Mostly cloudy

Mostly cloudy

62°F

UV Index
0 Low
Pressure
30.01 Falling
Visibility
5 miles
Dewpoint
54 °F
Humidity
73%
Wind
NW 2.8 mph
Gust
7.1 mph
Wind Chill
62 °F

Hourly Forecast

Today
7 PM
62°F
Thunderstorms
Today
8 PM
61°F
Showers
Today
9 PM
59°F
Cloudy
Today
10 PM
59°F
Cloudy
Today
11 PM
59°F
Cloudy
Tomorrow
12 AM
58°F
Cloudy
Tomorrow
1 AM
58°F
Cloudy
Tomorrow
2 AM
57°F
Cloudy
Tomorrow
3 AM
57°F
Cloudy
Tomorrow
4 AM
56°F
Mostly cloudy
Tomorrow
5 AM
56°F
Rain
Tomorrow
6 AM
56°F
Rain

7 Day Forecast

Thunderstorms

Saturday

75 °F

Mostly cloudy with a thunderstorm in spots this afternoon; thunderstorms can bring hail and damaging winds


Rain

Saturday Night

55 °F

Mostly cloudy; an evening shower in spots followed by occasional rain and drizzle late


Partly sunny

Sunday

77 °F

A morning shower in spots; otherwise, sun and some clouds


Clear

Sunday Night

49 °F

Clear


Partly sunny

Monday

84 °F

Warmer with sunshine and some clouds


Partly cloudy

Monday Night

51 °F

Partly cloudy


Intermittent clouds

Tuesday

76 °F

Pleasant with times of clouds and sun


Mostly cloudy w/ t-storms

Tuesday Night

50 °F

Cloudy in the evening with a couple of showers and a thunderstorm, then partly cloudy late


Mostly cloudy w/ t-storms

Wednesday

75 °F

Some sun, then turning cloudy with a couple of showers and a thunderstorm


Clear

Wednesday Night

47 °F

Clear


Sunrise and Sunset

Sunrise
6:39 AM
Sunset
7:13 PM

Based on AccuWeather data