Longmont weather in June: Longmont, Colorado: normal highs, lows, rain and records for June
Longmont in June has a normal high of 84°F and a normal low of 51°F, a daily mean of 67°F, rising from 79°F on the 1st to 89°F by the 30th. Measurable precipitation falls on 8 days in a normal June, 1.75 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 10°C, 44 mm of precipitation in June.
- NOAA stationLongmont (2 mi ESE)
- Station IDUSC00055116
- Location40.17°N 105.08°W
- Elevation4,950 ft (1,509 m)
- From the center1 miles
- Population99,818
- Jan 45° 14°
- Feb 47° 17°
- Mar 57° 26°
- Apr 63° 32°
- May 73° 41°
- Jun 84° 51°
- Jul 91° 55°
- Aug 88° 54°
- Sep 80° 46°
- Oct 66° 33°
- Nov 54° 24°
- Dec 45° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Longmont in June?
The normal high is 84°F and the normal low 51°F, for a daily mean of 67.2°F. June is 10.1°F warmer than May and 5.9°F cooler than July. June is the 3rd warmest month of the year in Longmont and the 4th wettest. Across the month the normal high rises 10°F, from 79°F on June 1 to 89°F on June 30. From one year to the next June's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Junes in three average between 64°F and 70°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| June 1 | 79°F | 47°F | 32% | 17% |
| June 8 | 81°F | 49°F | 31% | 17% |
| June 15 | 84°F | 51°F | 28% | 15% |
| June 22 | 86°F | 52°F | 25% | 14% |
| June 30 | 89°F | 54°F | 23% | 12% |
Every day of June: normal high, low and chance of precipitation (warmest afternoon June 30, coldest night June 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| June 1 | 79°F | 47°F | 32% | 17% | 14 h 50 min |
| June 2 | 79°F | 47°F | 32% | 17% | 14 h 50 min |
| June 3 | 79°F | 47°F | 32% | 17% | 14 h 50 min |
| June 4 | 80°F | 48°F | 32% | 17% | 14 h 50 min |
| June 5 | 80°F | 48°F | 32% | 17% | 14 h 50 min |
| June 6 | 81°F | 48°F | 31% | 17% | 14 h 50 min |
| June 7 | 81°F | 49°F | 31% | 17% | 15 h |
| June 8 | 81°F | 49°F | 31% | 17% | 15 h |
| June 9 | 82°F | 49°F | 31% | 17% | 15 h |
| June 10 | 82°F | 49°F | 30% | 16% | 15 h |
| June 11 | 82°F | 50°F | 30% | 16% | 15 h |
| June 12 | 83°F | 50°F | 29% | 16% | 15 h |
| June 13 | 83°F | 50°F | 29% | 16% | 15 h |
| June 14 | 83°F | 50°F | 29% | 15% | 15 h |
| June 15 | 84°F | 51°F | 28% | 15% | 15 h |
| June 16 | 84°F | 51°F | 28% | 15% | 15 h |
| June 17 | 85°F | 51°F | 28% | 15% | 15 h |
| June 18 | 85°F | 51°F | 27% | 15% | 15 h |
| June 19 | 85°F | 51°F | 27% | 14% | 15 h |
| June 20 | 86°F | 52°F | 26% | 14% | 15 h |
| June 21 | 86°F | 52°F | 26% | 14% | 15 h |
| June 22 | 86°F | 52°F | 25% | 14% | 15 h |
| June 23 | 87°F | 52°F | 25% | 13% | 15 h |
| June 24 | 87°F | 53°F | 25% | 13% | 15 h |
| June 25 | 87°F | 53°F | 24% | 13% | 15 h |
| June 26 | 88°F | 53°F | 24% | 13% | 15 h |
| June 27 | 88°F | 53°F | 24% | 13% | 15 h |
| June 28 | 88°F | 53°F | 23% | 13% | 15 h |
| June 29 | 89°F | 54°F | 23% | 12% | 15 h |
| June 30 | 89°F | 54°F | 23% | 12% | 15 h |
- Normal high
- 84°FJune average
- Normal low
- 51°FJune average
- Precipitation
- 1.75 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 14 h 50 min to 15 hJune 1 to June 30
- Days at 70°F or more
- 27
- Days at 80°F or more
- 21
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00055116; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Longmont in June?
On a given June day the chance of 0.01 inch or more is 28% on average, highest around June 1 (32%). In all, 1.75 in falls on 8 days of a normal June.
In a normal June in Longmont, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00055116.
What are the records for June in Longmont?
The warmest June temperature on this station's record (since 1893) is 106°F, on June 27, 1994; the coldest is 29°F, on June 6, 1998. The wettest June brought 6.33 in (1921).
The June mean against the 1991-2020 normal of 67.2°F: 2021 70.9°F (+3.7), 2022 69.3°F (+2.1), 2023 65.5°F (−1.7), 2024 72.3°F (+5.1), 2025 69.0°F (+1.8), 2026 70.3°F (+3.1). 5 of 6 ran warmer than normal.
| June | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.9°F | +3.7°F | 1.30 in |
| 2022 | 69.3°F | +2.1°F | 1.25 in |
| 2023 | 65.5°F | −1.7°F | 4.89 in |
| 2024 | 72.3°F | +5.1°F | 0.91 in |
| 2025 | 69.0°F | +1.8°F | 1.39 in |
| 2026 | 70.3°F | +3.1°F | 1.24 in |
Source: records: ACIS, station USC00055116; recent months: ACIS, station USC00055116. Records and recent months use complete months only.
How does June in Longmont compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, June normal highs run from 66°F in Fairplay to 91°F in Lamar; Longmont's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.