Johnstown Weather Forecast 15 Days, Weather in Johnstown Today
Current weather conditions and 15 day weather forecast for Johnstown, Wyoming, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Johnstown
| 14 September 2026 Monday 20.9 ° C / 69.6°F  Cloudy |
Feels Like : 19.4 ° C / 66.9°F Humidity : % 36 Pressure : 1001 mb Wind Speed : 3.6 kmph / 2.2 miles from E  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 63 |
15 day weather forecast for Johnstown, WY, USA
Weather Forecast for next 15 Days for Johnstown including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Johnstown, Wyoming state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 September 2026 Sunday |  Sunny |
11.3 ° C (52.3°F) |
31.2 ° C (88.2°F) |
19.5 ° C (67.2°F) |
% 34 | 5% | 6.8 | Sunrise:06:52 AM Sunset: 07:29 PM |
Moonrise:09:51 AM Moonset: 08:23 PM Moon Phase ( Waxing Crescent ) |
|
| 14 September 2026 Monday | Sunny |
12.1 ° C (53.8°F) |
24.6 ° C (76.3°F) |
17.9 ° C (64.1°F) |
% 26 | 0% | 6.3 | Sunrise:06:53 AM Sunset: 07:27 PM |
Moonrise:11:07 AM Moonset: 08:50 PM Moon Phase ( Waxing Crescent ) |
|
| 15 September 2026 Tuesday |  Overcast |
6.2 ° C (43.2°F) |
22.1 ° C (71.7°F) |
13.9 ° C (57°F) |
% 38 | 5% | 5.8 | Sunrise:06:54 AM Sunset: 07:25 PM |
Moonrise:12:21 PM Moonset: 09:23 PM Moon Phase ( Waxing Crescent ) |
|
| 16 September 2026 Wednesday | Sunny |
10.4 ° C (50.8°F) |
27.1 ° C (80.8°F) |
18.2 ° C (64.8°F) |
% 38 | 1% | 5.9 | Sunrise:06:55 AM Sunset: 07:23 PM |
Moonrise:01:31 PM Moonset: 10:03 PM Moon Phase ( First Quarter ) |
|
| 17 September 2026 Thursday | Overcast |
15 ° C (59°F) |
25.1 ° C (77.1°F) |
19.3 ° C (66.8°F) |
% 35 | 10% | 6 | Sunrise:06:56 AM Sunset: 07:21 PM |
Moonrise:02:34 PM Moonset: 10:51 PM Moon Phase ( First Quarter ) |
|
| 18 September 2026 Friday | Sunny |
12.7 ° C (54.8°F) |
27.7 ° C (81.9°F) |
19.6 ° C (67.2°F) |
% 45 | 36% | 7 | Sunrise:06:57 AM Sunset: 07:20 PM |
Moonrise:03:27 PM Moonset: 11:47 PM Moon Phase ( First Quarter ) |
|
| 19 September 2026 Saturday |  Patchy rain nearby |
11.1 ° C (52°F) |
22.8 ° C (73°F) |
15.1 ° C (59.1°F) |
% 59 | 65% | 6 | Sunrise:06:58 AM Sunset: 07:18 PM |
Moonrise:04:11 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 20 September 2026 Sunday | Sunny |
11.3 ° C (52.3°F) |
21.8 ° C (71.3°F) |
16.6 ° C (61.9°F) |
% 44 | 17% | 6 | Sunrise:07:00 AM Sunset: 07:16 PM |
Moonrise:04:46 PM Moonset: 12:47 AM Moon Phase ( Waxing Gibbous ) |
|
| 21 September 2026 Monday | Sunny |
12.4 ° C (54.3°F) |
23.2 ° C (73.8°F) |
17.8 ° C (64°F) |
% 37 | 1% | 6 | Sunrise:07:01 AM Sunset: 07:14 PM |
Moonrise:05:15 PM Moonset: 01:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 22 September 2026 Tuesday | Sunny |
13.5 ° C (56.4°F) |
25.8 ° C (78.4°F) |
19.6 ° C (67.2°F) |
% 24 | 3% | 7 | Sunrise:07:02 AM Sunset: 07:12 PM |
Moonrise:05:38 PM Moonset: 02:56 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 September 2026 Wednesday | Sunny |
10.2 ° C (50.3°F) |
19.9 ° C (67.8°F) |
14.6 ° C (58.2°F) |
% 44 | 2% | 5 | Sunrise:07:03 AM Sunset: 07:11 PM |
Moonrise:05:59 PM Moonset: 04:00 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 September 2026 Thursday | Overcast |
11.1 ° C (52°F) |
23 ° C (73.4°F) |
16.8 ° C (62.2°F) |
% 30 | 5% | 5 | Sunrise:07:04 AM Sunset: 07:09 PM |
Moonrise:06:17 PM Moonset: 05:03 AM Moon Phase ( Full Moon ) |
|
| 25 September 2026 Friday |  Partly Cloudy |
14.4 ° C (58°F) |
25.7 ° C (78.3°F) |
20 ° C (67.9°F) |
% 31 | 5% | 7 | Sunrise:07:05 AM Sunset: 07:07 PM |
Moonrise:06:35 PM Moonset: 06:07 AM Moon Phase ( Full Moon ) |
|
| 26 September 2026 Saturday | Sunny |
14.5 ° C (58.1°F) |
25.6 ° C (78°F) |
20.1 ° C (68.1°F) |
% 28 | 2% | 7 | Sunrise:07:06 AM Sunset: 07:05 PM |
Moonrise:06:54 PM Moonset: 07:11 AM Moon Phase ( Full Moon ) |
|
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