Johnstown, CO weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Johnstown now
Loading the National Weather Service forecast…
Johnstown weather by the hour
Johnstown weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Johnstown.
This week in Johnstown
Sunrise, sunset and moon in Johnstown
What is the weather usually like in Johnstown?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 91°F average high
- Januarycoldest month · 15°F average low
- 15.2 inprecipitation per year · 386 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Johnstown: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station LONGMONT 2 ESE, CO US (USC00055116), adjusted for the elevation of Johnstown.
Johnstown weather month by month
Sunrise and sunset in Johnstown through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:18 AM | 4:59 PM | 9 h 40 min |
| February | 6:50 AM | 5:36 PM | 10 h 45 min |
| March | 7:09 AM | 7:07 PM | 11 h 58 min |
| April | 6:19 AM | 7:39 PM | 13 h 20 min |
| May | 5:41 AM | 8:10 PM | 14 h 28 min |
| June | 5:27 AM | 8:32 PM | 15 h 5 min |
| July | 5:41 AM | 8:30 PM | 14 h 48 min |
| August | 6:09 AM | 7:58 PM | 13 h 48 min |
| September | 6:39 AM | 7:10 PM | 12 h 30 min |
| October | 7:09 AM | 6:21 PM | 11 h 11 min |
| November | 6:44 AM | 4:44 PM | 9 h 59 min |
| December | 7:13 AM | 4:35 PM | 9 h 22 min |
Times for the 15th of each month, local time (America/Denver).
What is the weather like in Johnstown?
Johnstown has a cold semi-arid climate. The warmest month is July, with an average high of 91°F (33°C), and the coldest is January, with average lows of 15°F (-10°C).
It gets about 15.2 inches (386 mm) of precipitation a year. The wettest month is April and the driest is December.
The best time to visit Johnstown is May–June and September–October. At 4,852 ft of elevation, nights are cool even in summer. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Johnstown
Weather in towns near Johnstown
Questions about the weather in Johnstown
What is the hottest month in Johnstown?
July, with an average high of 91°F (33°C).
What is the coldest month in Johnstown?
January, with an average low of 15°F (-10°C).
How much does it rain in Johnstown?
About 15.2 inches (386 mm) a year; the wettest month is April.
Does it snow in Johnstown?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Johnstown?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Johnstown have?
Cold semi-arid (Köppen BSk).
What is the weather like in Johnstown in November?
Highs average 54°F and lows 24°F, with about 0.8 inches of precipitation.
What time is sunrise in Johnstown?
Around 6:44 AM in mid-November, and sunset around 4:44 PM. Today’s exact times are shown above.
Where does this Johnstown weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Johnstown.
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