Big Sandy Weather Forecast 15 Days, Weather in Big Sandy Today
Current weather conditions and 15 day weather forecast for Big Sandy, 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.
Current weather conditions at Big Sandy
| 11 May 2026 Monday 17.7 ° C / 63.9°F  Clear |
Feels Like : 17.7 ° C / 63.9°F Humidity : % 22 Pressure : 1006 mb Wind Speed : 5.4 kmph / 3.4 miles from S  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Big Sandy, MT, USA
Weather Forecast for next 15 Days for Big Sandy 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 Big Sandy, Montana 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 11 May 2026 Monday |  Patchy rain nearby |
11.7 ° C (53°F) |
21.5 ° C (70.7°F) |
16.9 ° C (62.5°F) |
% 36 | 83% | 6.5 | Sunrise:05:46 AM Sunset: 08:47 PM |
Moonrise:03:21 AM Moonset: 02:38 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday | Sunny |
8.6 ° C (47.5°F) |
22.2 ° C (72°F) |
16 ° C (60.7°F) |
% 38 | 0% | 7 | Sunrise:05:45 AM Sunset: 08:49 PM |
Moonrise:03:37 AM Moonset: 03:55 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Patchy rain nearby |
13.4 ° C (56.1°F) |
31 ° C (87.8°F) |
20.4 ° C (68.7°F) |
% 38 | 86% | 7.3 | Sunrise:05:44 AM Sunset: 08:50 PM |
Moonrise:03:53 AM Moonset: 05:14 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
14.2 ° C (57.6°F) |
26.2 ° C (79.1°F) |
19.9 ° C (67.9°F) |
% 54 | 0% | 6.9 | Sunrise:05:42 AM Sunset: 08:51 PM |
Moonrise:04:10 AM Moonset: 06:38 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Sunny |
13.5 ° C (56.3°F) |
25.8 ° C (78.5°F) |
18.3 ° C (64.9°F) |
% 52 | 0% | 0 | Sunrise:05:41 AM Sunset: 08:53 PM |
Moonrise:04:32 AM Moonset: 08:06 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
10.9 ° C (51.5°F) |
19.4 ° C (66.9°F) |
15.3 ° C (59.6°F) |
% 33 | 0% | 5 | Sunrise:05:40 AM Sunset: 08:54 PM |
Moonrise:05:00 AM Moonset: 09:36 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday |  Partly Cloudy |
5.8 ° C (42.4°F) |
14.5 ° C (58.1°F) |
10.6 ° C (51.1°F) |
% 49 | 0% | 4 | Sunrise:05:39 AM Sunset: 08:55 PM |
Moonrise:05:40 AM Moonset: 10:59 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Sunny |
8.1 ° C (46.6°F) |
22.9 ° C (73.2°F) |
14.9 ° C (58.9°F) |
% 40 | 0% | 4 | Sunrise:05:38 AM Sunset: 08:57 PM |
Moonrise:06:33 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Sunny |
10.2 ° C (50.4°F) |
25.5 ° C (77.9°F) |
17.9 ° C (64.1°F) |
% 37 | 0% | 5 | Sunrise:05:36 AM Sunset: 08:58 PM |
Moonrise:07:44 AM Moonset: 12:07 AM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Sunny |
13.6 ° C (56.5°F) |
27.5 ° C (81.6°F) |
21.4 ° C (70.5°F) |
% 29 | 0% | 6 | Sunrise:05:35 AM Sunset: 08:59 PM |
Moonrise:09:06 AM Moonset: 12:58 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Sunny |
11.5 ° C (52.7°F) |
23 ° C (73.4°F) |
17.5 ° C (63.5°F) |
% 35 | 0% | 5 | Sunrise:05:34 AM Sunset: 09:00 PM |
Moonrise:10:30 AM Moonset: 01:34 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Sunny |
15.3 ° C (59.6°F) |
31.3 ° C (88.3°F) |
23 ° C (73.4°F) |
% 29 | 0% | 6 | Sunrise:05:33 AM Sunset: 09:02 PM |
Moonrise:11:52 AM Moonset: 02:00 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Patchy rain nearby |
8.2 ° C (46.7°F) |
15.6 ° C (60.1°F) |
14 ° C (57.1°F) |
% 70 | 86% | 3 | Sunrise:05:32 AM Sunset: 09:03 PM |
Moonrise:01:09 PM Moonset: 02:19 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Patchy rain nearby |
6.6 ° C (43.9°F) |
14.7 ° C (58.5°F) |
10.4 ° C (50.7°F) |
% 58 | 76% | 3 | Sunrise:05:31 AM Sunset: 09:04 PM |
Moonrise:02:22 PM Moonset: 02:36 AM Moon Phase ( Waxing Gibbous ) |
|
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