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Weather Longmont: Current forecast

Longmont / Colorado (CO) / United States

27.1 °C
Feels like 25.4 °C
Min 20 °C / Max 36 °C
Weather Longmont: Partly cloudy, 27 °C Partly cloudy
8.7 mph N
Wind
10.1 mph N
Gusts
850 hPa
Pressure
0 mm
Precipitation
54 %
Humidity
8.4
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass Moderate
Mugwort None
Ragweed None
05:53 / 20:19
Sunrise / Sunset
19:45 / 04:00
Moonrise / Moonset
Full Moon (99 %)
Moon phase

Updated: Jul 27, 2026, 20:31 CEST Jul 27, 2026, 12:31 MDT

Today's Summary

In Longmont the weather today is partly cloudy. The thermometer currently shows 27.1°C. Wear light, breathable clothes and drink plenty of fluids. During the day temperatures will range between 19.5°C and 36.4°C.

Hourly forecast – Longmont, today

Jul 27, 12:00
36 °C
Patchy light drizzle
Longmont Jul 27, 12:00: Patchy light drizzle, 36 °C
Jul 27, 13:00
30 °C
Patchy light drizzle
Longmont Jul 27, 13:00: Patchy light drizzle, 30 °C
Jul 27, 14:00
26 °C
Patchy rain possible
Longmont Jul 27, 14:00: Patchy rain possible, 26 °C
Jul 27, 15:00
27 °C
Patchy rain possible
Longmont Jul 27, 15:00: Patchy rain possible, 27 °C
Jul 27, 16:00
26 °C
Light rain shower
Longmont Jul 27, 16:00: Light rain shower, 26 °C
Jul 27, 17:00
25 °C
Patchy rain possible
Longmont Jul 27, 17:00: Patchy rain possible, 25 °C
Jul 27, 18:00
24 °C
Patchy rain possible
Longmont Jul 27, 18:00: Patchy rain possible, 24 °C
Jul 27, 19:00
22 °C
Clear
Longmont Jul 27, 19:00: Clear, 22 °C
Jul 27, 20:00
20 °C
Clear
Longmont Jul 27, 20:00: Clear, 20 °C
Jul 27, 21:00
20 °C
Clear
Longmont Jul 27, 21:00: Clear, 20 °C
Jul 27, 22:00
19 °C
Clear
Longmont Jul 27, 22:00: Clear, 19 °C
Jul 27, 23:00
19 °C
Clear
Longmont Jul 27, 23:00: Clear, 19 °C
Jul 28, 00:00
18 °C
Clear
Longmont Jul 28, 00:00: Clear, 18 °C
Jul 28, 01:00
19 °C
Clear
Longmont Jul 28, 01:00: Clear, 19 °C
Jul 28, 02:00
19 °C
Clear
Longmont Jul 28, 02:00: Clear, 19 °C
Jul 28, 03:00
18 °C
Clear
Longmont Jul 28, 03:00: Clear, 18 °C
Jul 28, 04:00
18 °C
Sunny
Longmont Jul 28, 04:00: Sunny, 18 °C
Jul 28, 05:00
22 °C
Sunny
Longmont Jul 28, 05:00: Sunny, 22 °C
Jul 28, 06:00
25 °C
Sunny
Longmont Jul 28, 06:00: Sunny, 25 °C
Jul 28, 07:00
27 °C
Sunny
Longmont Jul 28, 07:00: Sunny, 27 °C
Jul 28, 08:00
29 °C
Sunny
Longmont Jul 28, 08:00: Sunny, 29 °C
Jul 28, 09:00
31 °C
Sunny
Longmont Jul 28, 09:00: Sunny, 31 °C
Jul 28, 10:00
33 °C
Sunny
Longmont Jul 28, 10:00: Sunny, 33 °C
Jul 28, 11:00
34 °C
Sunny
Longmont Jul 28, 11:00: Sunny, 34 °C
Time
12
13
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
Longmont Jul 27, 12:00: Patchy light drizzle
Longmont Jul 27, 13:00: Patchy light drizzle
Longmont Jul 27, 14:00: Patchy rain possible
Longmont Jul 27, 15:00: Patchy rain possible
Longmont Jul 27, 16:00: Light rain shower
Longmont Jul 27, 17:00: Patchy rain possible
Longmont Jul 27, 18:00: Patchy rain possible
Longmont Jul 27, 19:00: Clear
Longmont Jul 27, 20:00: Clear
Longmont Jul 27, 21:00: Clear
Longmont Jul 27, 22:00: Clear
Longmont Jul 27, 23:00: Clear
Longmont Jul 28, 00:00: Clear
Longmont Jul 28, 01:00: Clear
Longmont Jul 28, 02:00: Clear
Longmont Jul 28, 03:00: Clear
Longmont Jul 28, 04:00: Sunny
Longmont Jul 28, 05:00: Sunny
Longmont Jul 28, 06:00: Sunny
Longmont Jul 28, 07:00: Sunny
Longmont Jul 28, 08:00: Sunny
Longmont Jul 28, 09:00: Sunny
Longmont Jul 28, 10:00: Sunny
Longmont Jul 28, 11:00: Sunny
Temperature (°C)
Chance of rain (%)
17
36
10
7
17
11
11
3
4
5
5
4
5
5
4
4
4
2
1
1
1
1
1
1
Precipitation
0.2 mm
0.5 mm
0 mm
0 mm
0.2 mm
0 mm
0 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (mph)
NNE
9
WSW
13
E
3
S
2
ESE
4
E
3
NNE
2
SSW
3
SSW
2
SW
2
SW
2
NE
3
N
3
W
4
W
5
WNW
3
NW
3
NW
2
E
2
ENE
2
NE
4
NE
5
ENE
7
E
5
Pressure (hPa)
1008
1010
1011
1010
1010
1011
1012
1012
1011
1013
1012
1013
1013
1012
1012
1012
1012
1013
1013
1012
1012
1011
1010
1009
Humidity (%)
19 %
36 %
53 %
46 %
47 %
54 %
57 %
59 %
63 %
64 %
63 %
62 %
66 %
65 %
62 %
60 %
59 %
52 %
43 %
39 %
34 %
29 %
26 %
24 %
Cloud cover (%)
83 %
84 %
78 %
66 %
57 %
75 %
71 %
4 %
6 %
12 %
18 %
13 %
8 %
6 %
6 %
5 %
4 %
6 %
8 %
7 %
7 %
6 %
5 %
18 %

14-day weather forecast – Longmont

14-day trend for Longmont: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 12.9°C at night, with daytime highs up to 40.4°C.

Date
Jul 27
Jul 28
Jul 29
Jul 30
Jul 31
Aug 1
Aug 2
Aug 3
Aug 4
Aug 5
Aug 6
Aug 7
Aug 8
Aug 9
Longmont July 27, 2026: Sunny
Longmont July 28, 2026: Sunny
Longmont July 29, 2026: Sunny
Longmont July 30, 2026: Sunny
Longmont July 31, 2026: Sunny
Longmont August 1, 2026: Sunny
Longmont August 2, 2026: Sunny
Longmont August 3, 2026: Sunny
Longmont August 4, 2026: Sunny
Longmont August 5, 2026: Sunny
Longmont August 6, 2026: Sunny
Longmont August 7, 2026: Sunny
Longmont August 8, 2026: Sunny
Longmont August 9, 2026: Sunny
Temperature (°C)
Chance of rain (%)
57
57
63
17
1
1
1
36
1
1
1
1
3
57
Precipitation
1.1 mm
5.7 mm
10.5 mm
0.2 mm
—
—
0 mm
0.3 mm
—
—
—
—
0 mm
1.5 mm
Wind max (mph)
13
13
23
19
9
15
19
26
14
10
8
22
16
16
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
July 27, 2026 Longmont July 27, 2026: Sunny Sunny 20 °C 36 °C 05:53 20:19 19:45 04:00 Full Moon (99 %)
July 28, 2026 Longmont July 28, 2026: Sunny Sunny 18 °C 35 °C 05:54 20:18 20:18 05:02 Full Moon (100 %)
July 29, 2026 Longmont July 29, 2026: Sunny Sunny 16 °C 35 °C 05:55 20:18 20:45 06:04 Full Moon (99 %)
July 30, 2026 Longmont July 30, 2026: Sunny Sunny 18 °C 35 °C 05:56 20:17 21:08 07:06 Waning Moon (96 %)
July 31, 2026 Longmont July 31, 2026: Sunny Sunny 18 °C 37 °C 05:57 20:16 21:29 08:07 Waning Moon (91 %)
August 1, 2026 Longmont August 1, 2026: Sunny Sunny 19 °C 38 °C 05:58 20:14 21:49 09:08 Waning Moon (83 %)
August 2, 2026 Longmont August 2, 2026: Sunny Sunny 19 °C 40 °C 05:59 20:13 22:09 10:08 Waning Moon (75 %)
August 3, 2026 Longmont August 3, 2026: Sunny Sunny 19 °C 37 °C 06:00 20:12 22:30 11:10 Last Quarter (65 %)
August 4, 2026 Longmont August 4, 2026: Sunny Sunny 16 °C 31 °C 06:01 20:11 22:54 12:14 Last Quarter (55 %)
August 5, 2026 Longmont August 5, 2026: Sunny Sunny 13 °C 35 °C 06:02 20:10 23:23 13:21 Last Quarter (44 %)
August 6, 2026 Longmont August 6, 2026: Sunny Sunny 15 °C 39 °C 06:03 20:09 23:59 14:31 Last Quarter (34 %)
August 7, 2026 Longmont August 7, 2026: Sunny Sunny 21 °C 40 °C 06:04 20:08 Does not rise today 15:43 Waning Crescent (24 %)
August 8, 2026 Longmont August 8, 2026: Sunny Sunny 20 °C 38 °C 06:05 20:06 00:44 16:52 Waning Crescent (16 %)
August 9, 2026 Longmont August 9, 2026: Sunny Sunny 19 °C 36 °C 06:06 20:05 01:42 17:55 Waning Crescent (9 %)
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