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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

Cloudy

Cloudy

52°F

UV Index
0 Low
Pressure
29.67 Rising
Visibility
8 miles
Dewpoint
43 °F
Humidity
73%
Wind
WNW 1.7 mph
Gust
4.4 mph
Wind Chill
52 °F

Hourly Forecast

Today
11 PM
51°F
Thunderstorms
Tomorrow
12 AM
51°F
Cloudy
Tomorrow
1 AM
50°F
Intermittent clouds
Tomorrow
2 AM
49°F
Cloudy
Tomorrow
3 AM
49°F
Cloudy
Tomorrow
4 AM
48°F
Cloudy
Tomorrow
5 AM
48°F
Cloudy
Tomorrow
6 AM
47°F
Cloudy
Tomorrow
7 AM
50°F
Cloudy
Tomorrow
8 AM
53°F
Intermittent clouds
Tomorrow
9 AM
56°F
Intermittent clouds
Tomorrow
10 AM
59°F
Intermittent clouds

7 Day Forecast

Thunderstorms

Sunday

64 °F

Overcast and cooler; breezy this afternoon with showers and gusty thunderstorms; thunderstorms can bring flooding downpours, hail and damaging wind gusts


Mostly cloudy w/ t-storms

Sunday Night

47 °F

A thunderstorm in parts of the area this evening; otherwise, partly to mostly cloudy


Intermittent clouds

Monday

64 °F

Times of clouds and sun


Cloudy

Monday Night

40 °F

Cloudy


Mostly cloudy

Tuesday

72 °F

Cloudy in the morning, then intervals of clouds and sunshine in the afternoon


Mostly clear

Tuesday Night

44 °F

Mainly clear


Mostly sunny

Wednesday

78 °F

Mostly sunny and nice


Mostly clear

Wednesday Night

42 °F

Mainly clear


Mostly sunny

Thursday

77 °F

Sunny to partly cloudy and delightful


Clear

Thursday Night

48 °F

Clear


Sunrise and Sunset

Sunrise
5:42 AM
Sunset
8:12 PM

Based on AccuWeather data