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Longmont Weather Forecast 6/20-21/2020

In Brief:

Beautiful, smoke free, mostly dry weather is the rule for the weekend and the week - enjoy!

Forecast Discussion:

A line of thunderstorms gave us a quick dash of rain and some rumbles of thunder Friday.  Longmont picked up an additional 1/10th of an inch of rain on average bringing us to a two-day storm total of about 2/3rds to 3/4ths of an inch around town (Figure 1 in the gallery). High pressure at the surface means nice weather will continue through the weekend (Figure 2). Aloft, we have the ridge out on the west coast and northwest flow keeping us cooled to near normal (Figure 3).  This flow is serving another great function - it is blowing the Arizona wildfire smoke down into New Mexico and Texas (sorry down there).  We are completely smoke and haze free for the next few days (Figure 4).

The Longer Range Forecast:

Northwest flow will keep temperatures very close to normal early in the week (even a touch below normal).  Ripples in the upper level flow plus afternoon heating of the land and a bit of moisture will result in a daily small chance of garden variety thunderstorms Monday through Saturday.  We see a short wave ridge heat us up on Thursday and a return of the main ridge next weekend (bringing back 90'sF).   There will not be much weather-news this week

Summer Solstice! 

Welcome to the start of astronomical summer at 3:43pm Saturday.  The nights are shortest and the days longest for the year this weekend.

Forecast Video for the week beginning June 17th, 2020


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

91°F

UV Index
2 Low
Pressure
29.98 Rising
Visibility
8 miles
Dewpoint
48 °F
Humidity
22%
Wind
ENE 4 mph
Gust
7.8 mph
Wind Chill
91 °F

Hourly Forecast

Today
6 PM
93°F
Intermittent clouds
Today
7 PM
89°F
Cloudy
Today
8 PM
86°F
Partly sunny
Today
9 PM
82°F
Partly cloudy
Today
10 PM
79°F
Partly cloudy
Today
11 PM
76°F
Partly cloudy
Tomorrow
12 AM
73°F
Partly cloudy
Tomorrow
1 AM
72°F
Partly cloudy
Tomorrow
2 AM
70°F
Partly cloudy
Tomorrow
3 AM
68°F
Partly cloudy
Tomorrow
4 AM
66°F
Partly cloudy
Tomorrow
5 AM
65°F
Partly cloudy

7 Day Forecast

Mostly cloudy

Sunday

93 °F

Thickening clouds


Partly cloudy

Sunday Night

63 °F

Partly cloudy


Mostly cloudy w/ t-storms

Monday

93 °F

Some sunshine giving way to clouds with a thunderstorm in the area late in the afternoon; thunderstorms can bring hail and damaging winds


Partly cloudy w/ t-storms

Monday Night

59 °F

A thunderstorm in spots in the evening; otherwise, clear to partly cloudy; thunderstorms can bring hail and damaging winds


Intermittent clouds

Tuesday

94 °F

Intervals of clouds and sunshine


Partly cloudy

Tuesday Night

60 °F

Partly cloudy


Partly sunny w/ t-storms

Wednesday

84 °F

Not as warm with times of sun and clouds; an afternoon thunderstorm; thunderstorms can bring hail and damaging winds


Mostly cloudy

Wednesday Night

58 °F

An evening thunderstorm; otherwise, mostly cloudy


Mostly cloudy

Thursday

89 °F

Mostly cloudy with a thunderstorm in spots in the afternoon


Intermittent clouds

Thursday Night

58 °F

Partly cloudy


Sunrise and Sunset

Sunrise
5:42 AM
Sunset
8:30 PM

Based on AccuWeather data