Current weather conditions and 15 day weather forecast for Heart Butte, Montana, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
| 18 September 2026 Friday 16.5 ° C / 61.7°F ![]() Cloudy |
Feels Like : 14.6 ° C / 58.3°F Humidity : % 52 Pressure : 1014 mb Wind Speed : 5.8 kmph / 3.6 miles from ENE ![]() Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 70 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 September 2026 Thursday | Sunny |
7 ° C (44.5°F) |
17.8 ° C (64.1°F) |
11.9 ° C (53.3°F) |
% 59 | 6% | 4.8 | Sunrise:07:11 AM Sunset: 07:40 PM |
Moonrise:03:19 PM Moonset: 10:40 PM Moon Phase ( First Quarter ) |
|
| 18 September 2026 Friday | Sunny |
8.2 ° C (46.8°F) |
17.9 ° C (64.2°F) |
12.6 ° C (54.7°F) |
% 64 | 17% | 4.6 | Sunrise:07:12 AM Sunset: 07:38 PM |
Moonrise:04:12 PM Moonset: 11:36 PM Moon Phase ( First Quarter ) |
|
| 19 September 2026 Saturday | Sunny |
9.7 ° C (49.4°F) |
18.6 ° C (65.6°F) |
13 ° C (55.5°F) |
% 64 | 17% | 5.1 | Sunrise:07:14 AM Sunset: 07:36 PM |
Moonrise:04:54 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 20 September 2026 Sunday | Sunny |
8 ° C (46.3°F) |
19.9 ° C (67.8°F) |
12.8 ° C (55.1°F) |
% 59 | 4% | 4.8 | Sunrise:07:15 AM Sunset: 07:34 PM |
Moonrise:05:25 PM Moonset: 12:40 AM Moon Phase ( Waxing Gibbous ) |
|
| 21 September 2026 Monday | Sunny |
7.1 ° C (44.7°F) |
18 ° C (64.3°F) |
12.2 ° C (54°F) |
% 48 | 4% | 5 | Sunrise:07:16 AM Sunset: 07:32 PM |
Moonrise:05:49 PM Moonset: 01:48 AM Moon Phase ( Waxing Gibbous ) |
|
| 22 September 2026 Tuesday | Cloudy |
2 ° C (35.6°F) |
10 ° C (50°F) |
6.2 ° C (43.2°F) |
% 58 | 57% | 2 | Sunrise:07:18 AM Sunset: 07:29 PM |
Moonrise:06:08 PM Moonset: 02:57 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 September 2026 Wednesday | Overcast |
4.6 ° C (40.3°F) |
16.4 ° C (61.5°F) |
9.7 ° C (49.4°F) |
% 46 | 6% | 5 | Sunrise:07:19 AM Sunset: 07:27 PM |
Moonrise:06:24 PM Moonset: 04:06 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 September 2026 Thursday | Sunny |
7.2 ° C (44.9°F) |
21.9 ° C (71.4°F) |
13.3 ° C (56°F) |
% 49 | 3% | 6 | Sunrise:07:20 AM Sunset: 07:25 PM |
Moonrise:06:38 PM Moonset: 05:14 AM Moon Phase ( Full Moon ) |
|
| 25 September 2026 Friday | Overcast |
9.6 ° C (49.2°F) |
22.7 ° C (72.8°F) |
15.5 ° C (60°F) |
% 43 | 6% | 5 | Sunrise:07:22 AM Sunset: 07:23 PM |
Moonrise:06:52 PM Moonset: 06:22 AM Moon Phase ( Full Moon ) |
|
| 26 September 2026 Saturday | Sunny |
11.3 ° C (52.3°F) |
20.1 ° C (68.2°F) |
15.5 ° C (59.9°F) |
% 39 | 4% | 5 | Sunrise:07:23 AM Sunset: 07:21 PM |
Moonrise:07:06 PM Moonset: 07:31 AM Moon Phase ( Full Moon ) |
|
| 27 September 2026 Sunday | Sunny |
3.1 ° C (37.6°F) |
11.1 ° C (52°F) |
7.9 ° C (46.2°F) |
% 52 | 3% | 4 | Sunrise:07:25 AM Sunset: 07:19 PM |
Moonrise:07:21 PM Moonset: 08:41 AM Moon Phase ( Waning Gibbous ) |
|
| 28 September 2026 Monday | Sunny |
-2.2 ° C (28°F) |
2.6 ° C (36.6°F) |
0.4 ° C (32.8°F) |
% 79 | 62% | 2 | Sunrise:07:26 AM Sunset: 07:17 PM |
Moonrise:07:40 PM Moonset: 09:55 AM Moon Phase ( Waning Gibbous ) |
|
| 29 September 2026 Tuesday | Sunny |
-3.5 ° C (25.7°F) |
8.2 ° C (46.8°F) |
1.8 ° C (35.2°F) |
% 75 | 11% | 3 | Sunrise:07:28 AM Sunset: 07:15 PM |
Moonrise:08:04 PM Moonset: 11:10 AM Moon Phase ( Waning Gibbous ) |
|
| 30 September 2026 Wednesday | Sunny |
-0.6 ° C (30.8°F) |
12.4 ° C (54.4°F) |
5.1 ° C (41.2°F) |
% 61 | 6% | 4 | Sunrise:07:29 AM Sunset: 07:13 PM |
Moonrise:08:35 PM Moonset: 12:28 PM Moon Phase ( Waning Gibbous ) |
|