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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

33°F

UV Index
0 Low
Pressure
29.81 Steady
Visibility
8 miles
Dewpoint
28 °F
Humidity
81%
Wind
N 1.6 mph
Gust
3.8 mph
Wind Chill
33 °F

Hourly Forecast

Today
7 AM
34°F
Intermittent clouds
Today
8 AM
34°F
Intermittent clouds
Today
9 AM
37°F
Intermittent clouds
Today
10 AM
40°F
Intermittent clouds
Today
11 AM
42°F
Intermittent clouds
Today
12 PM
44°F
Intermittent clouds
Today
1 PM
46°F
Intermittent clouds
Today
2 PM
45°F
Intermittent clouds
Today
3 PM
45°F
Intermittent clouds
Today
4 PM
43°F
Intermittent clouds
Today
5 PM
41°F
Intermittent clouds
Today
6 PM
40°F
Intermittent clouds

7 Day Forecast

Intermittent clouds

Wednesday

46 °F

Intervals of clouds and sunshine


Rain and snow

Wednesday Night

29 °F

Cloudy most of the time with a rain or snow shower in spots


Sunny

Thursday

46 °F

Plenty of sunshine


Mostly cloudy

Thursday Night

32 °F

Clouds breaking


Cloudy

Friday

47 °F

Cloudy


Mostly cloudy w/ showers

Friday Night

30 °F

Mostly cloudy with a shower around after temperatures rise above freezing late


Mostly cloudy

Saturday

52 °F

Some sun, then turning cloudy


Mostly cloudy

Saturday Night

35 °F

Mostly cloudy


Partly sunny

Sunday

56 °F

Partly sunny and mild


Intermittent clouds

Sunday Night

36 °F

Breezy in the evening; otherwise, partly cloudy with a shower in spots late


Sunrise and Sunset

Sunrise
7:21 AM
Sunset
4:41 PM

Based on AccuWeather data