Hecla Weather Forecast 15 Days, Weather in Hecla Today
Current weather conditions and 15 day weather forecast for Hecla, South Dakota, 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 Hecla
| 12 May 2026 Tuesday 18.9 ° C / 66°F  Sunny |
Feels Like : 18.9 ° C / 66°F Humidity : % 38 Pressure : 1016 mb Wind Speed : 39.2 kmph / 24.4 miles from NNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Hecla, SD, USA
Weather Forecast for next 15 Days for Hecla 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 Hecla, South Dakota 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 12 May 2026 Tuesday | Sunny |
11.7 ° C (53.1°F) |
24.3 ° C (75.7°F) |
17.8 ° C (64.1°F) |
% 38 | 0% | 6.2 | Sunrise:06:04 AM Sunset: 08:54 PM |
Moonrise:03:48 AM Moonset: 04:04 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Sunny |
9.3 ° C (48.7°F) |
25 ° C (76.9°F) |
17.2 ° C (63°F) |
% 41 | 0% | 7.1 | Sunrise:06:03 AM Sunset: 08:56 PM |
Moonrise:04:06 AM Moonset: 05:21 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday |  Patchy rain nearby |
16.9 ° C (62.3°F) |
26.8 ° C (80.2°F) |
20.4 ° C (68.8°F) |
% 40 | 83% | 7.3 | Sunrise:06:02 AM Sunset: 08:57 PM |
Moonrise:04:26 AM Moonset: 06:42 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Sunny |
14.6 ° C (58.2°F) |
24.6 ° C (76.2°F) |
18.9 ° C (66.1°F) |
% 34 | 0% | 0.2 | Sunrise:06:01 AM Sunset: 08:58 PM |
Moonrise:04:50 AM Moonset: 08:08 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
7.9 ° C (46.3°F) |
21.3 ° C (70.3°F) |
14.7 ° C (58.5°F) |
% 50 | 0% | 4 | Sunrise:06:00 AM Sunset: 08:59 PM |
Moonrise:05:21 AM Moonset: 09:35 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Patchy rain nearby |
12.3 ° C (54.2°F) |
17.3 ° C (63.2°F) |
14.6 ° C (58.3°F) |
% 80 | 88% | 3 | Sunrise:05:58 AM Sunset: 09:00 PM |
Moonrise:06:02 AM Moonset: 10:56 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Patchy rain nearby |
6.9 ° C (44.5°F) |
12.3 ° C (54.2°F) |
9.5 ° C (49.2°F) |
% 77 | 77% | 2 | Sunrise:05:57 AM Sunset: 09:02 PM |
Moonrise:06:57 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Sunny |
5 ° C (41°F) |
19.2 ° C (66.6°F) |
12.5 ° C (54.6°F) |
% 63 | 0% | 4 | Sunrise:05:56 AM Sunset: 09:03 PM |
Moonrise:08:06 AM Moonset: 12:05 AM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Sunny |
13 ° C (55.4°F) |
23.1 ° C (73.6°F) |
17.7 ° C (63.8°F) |
% 47 | 0% | 5 | Sunrise:05:55 AM Sunset: 09:04 PM |
Moonrise:09:26 AM Moonset: 12:58 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday |  Partly Cloudy |
9 ° C (48.3°F) |
20.1 ° C (68.2°F) |
14.6 ° C (58.2°F) |
% 60 | 0% | 4 | Sunrise:05:54 AM Sunset: 09:05 PM |
Moonrise:10:48 AM Moonset: 01:37 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Patchy rain nearby |
12.5 ° C (54.5°F) |
23.9 ° C (75.1°F) |
15.8 ° C (60.4°F) |
% 70 | 89% | 4 | Sunrise:05:53 AM Sunset: 09:06 PM |
Moonrise:12:07 PM Moonset: 02:05 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Patchy rain nearby |
11.2 ° C (52.2°F) |
16.9 ° C (62.4°F) |
14 ° C (57.3°F) |
% 61 | 81% | 3 | Sunrise:05:53 AM Sunset: 09:07 PM |
Moonrise:01:22 PM Moonset: 02:27 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Sunny |
9.2 ° C (48.6°F) |
25.3 ° C (77.6°F) |
17.6 ° C (63.7°F) |
% 54 | 0% | 5 | Sunrise:05:52 AM Sunset: 09:08 PM |
Moonrise:02:33 PM Moonset: 02:46 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 May 2026 Monday |  Moderate rain |
16.7 ° C (62.1°F) |
24 ° C (75.3°F) |
20.3 ° C (68.5°F) |
% 68 | 88% | 5 | Sunrise:05:51 AM Sunset: 09:09 PM |
Moonrise:03:42 PM Moonset: 03:03 AM Moon Phase ( Waxing Gibbous ) |
|
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