Current weather conditions and 15 day weather forecast for Grass Range, 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.
| 03 August 2026 Monday 17.3 ° C / 63.1°F ![]() Partly Cloudy |
Feels Like : 9.7 ° C / 49.5°F Humidity : % 37 Pressure : 1020 mb Wind Speed : 30.6 kmph / 19 miles from NW ![]() Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 34 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 03 August 2026 Monday | Sunny |
9.2 ° C (48.6°F) |
18.7 ° C (65.7°F) |
14.9 ° C (58.7°F) |
% 43 | 36% | 4.3 | Sunrise:05:57 AM Sunset: 08:45 PM |
Moonrise:10:36 PM Moonset: 11:32 AM Moon Phase ( Last Quarter ) |
|
| 04 August 2026 Tuesday | Sunny |
9.4 ° C (48.9°F) |
23.9 ° C (75°F) |
16.9 ° C (62.3°F) |
% 29 | 1% | 6.8 | Sunrise:05:58 AM Sunset: 08:44 PM |
Moonrise:10:54 PM Moonset: 12:42 PM Moon Phase ( Last Quarter ) |
|
| 05 August 2026 Wednesday | Sunny |
13.9 ° C (57°F) |
29.1 ° C (84.3°F) |
21 ° C (69.8°F) |
% 23 | 1% | 4.8 | Sunrise:05:59 AM Sunset: 08:42 PM |
Moonrise:11:17 PM Moonset: 01:56 PM Moon Phase ( Last Quarter ) |
|
| 06 August 2026 Thursday | Sunny |
17.2 ° C (63°F) |
31 ° C (87.9°F) |
24 ° C (75.2°F) |
% 20 | 0% | 6.2 | Sunrise:06:01 AM Sunset: 08:41 PM |
Moonrise:11:47 PM Moonset: 03:12 PM Moon Phase ( Last Quarter ) |
|
| 07 August 2026 Friday | Sunny |
16.7 ° C (62.1°F) |
35.7 ° C (96.2°F) |
26.1 ° C (79°F) |
% 25 | 1% | 9 | Sunrise:06:02 AM Sunset: 08:39 PM |
Moonrise:Does not rise today Moonset: 04:29 PM Moon Phase ( Waning Crescent ) |
|
| 08 August 2026 Saturday | Sunny |
17.8 ° C (64°F) |
29.1 ° C (84.3°F) |
22.9 ° C (73.2°F) |
% 26 | 0% | 7 | Sunrise:06:03 AM Sunset: 08:38 PM |
Moonrise:12:28 AM Moonset: 05:42 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Sunny |
12.9 ° C (55.1°F) |
26.7 ° C (80°F) |
19.4 ° C (67°F) |
% 44 | 1% | 7 | Sunrise:06:04 AM Sunset: 08:36 PM |
Moonrise:01:24 AM Moonset: 06:43 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Sunny |
13.9 ° C (57.1°F) |
28 ° C (82.4°F) |
20.8 ° C (69.5°F) |
% 41 | 17% | 7 | Sunrise:06:06 AM Sunset: 08:35 PM |
Moonrise:02:37 AM Moonset: 07:30 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
15.6 ° C (60.1°F) |
33.9 ° C (93°F) |
24.8 ° C (76.6°F) |
% 35 | 1% | 8 | Sunrise:06:07 AM Sunset: 08:33 PM |
Moonrise:04:01 AM Moonset: 08:06 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
21.5 ° C (70.6°F) |
36 ° C (96.8°F) |
29.2 ° C (84.5°F) |
% 20 | 1% | 9 | Sunrise:06:08 AM Sunset: 08:31 PM |
Moonrise:05:31 AM Moonset: 08:33 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Sunny |
22.2 ° C (72°F) |
35.8 ° C (96.4°F) |
29.5 ° C (85.1°F) |
% 25 | 17% | 9 | Sunrise:06:10 AM Sunset: 08:30 PM |
Moonrise:06:59 AM Moonset: 08:55 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Patchy rain nearby |
17.5 ° C (63.6°F) |
28 ° C (82.5°F) |
22.5 ° C (72.5°F) |
% 54 | 62% | 7 | Sunrise:06:11 AM Sunset: 08:28 PM |
Moonrise:08:25 AM Moonset: 09:14 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
17.2 ° C (62.9°F) |
31 ° C (87.7°F) |
22.9 ° C (73.2°F) |
% 49 | 2% | 8 | Sunrise:06:12 AM Sunset: 08:26 PM |
Moonrise:09:47 AM Moonset: 09:32 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Sunny |
20.1 ° C (68.1°F) |
36 ° C (96.8°F) |
27.7 ° C (81.8°F) |
% 23 | 1% | 9 | Sunrise:06:13 AM Sunset: 08:25 PM |
Moonrise:11:07 AM Moonset: 09:51 PM Moon Phase ( Waxing Crescent ) |
|