Lake Flat Weather Forecast 15 Days, Weather in Lake Flat Today
Current weather conditions and 15 day weather forecast for Lake Flat, 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 Lake Flat
| 11 May 2026 Monday 10.8 ° C / 51.4°F  Clear |
Feels Like : 8.1 ° C / 46.7°F Humidity : % 54 Pressure : 1014 mb Wind Speed : 10.4 kmph / 6.5 miles from SE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Lake Flat, SD, USA
Weather Forecast for next 15 Days for Lake Flat 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 Lake Flat, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 11 May 2026 Monday | Sunny |
10.5 ° C (50.9°F) |
33.6 ° C (92.5°F) |
20.5 ° C (68.9°F) |
% 36 | 0% | 7.2 | Sunrise:05:28 AM Sunset: 08:05 PM |
Moonrise:02:45 AM Moonset: 02:10 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday |  Patchy rain nearby |
12 ° C (53.6°F) |
23.5 ° C (74.2°F) |
17.6 ° C (63.6°F) |
% 37 | 81% | 7.5 | Sunrise:05:26 AM Sunset: 08:06 PM |
Moonrise:03:04 AM Moonset: 03:22 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Sunny |
11.7 ° C (53.1°F) |
29.5 ° C (85°F) |
20.5 ° C (68.9°F) |
% 32 | 0% | 8 | Sunrise:05:25 AM Sunset: 08:07 PM |
Moonrise:03:24 AM Moonset: 04:37 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
17.4 ° C (63.3°F) |
33 ° C (91.5°F) |
24.6 ° C (76.3°F) |
% 35 | 0% | 7.3 | Sunrise:05:24 AM Sunset: 08:08 PM |
Moonrise:03:46 AM Moonset: 05:56 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Patchy rain nearby |
13.7 ° C (56.6°F) |
28.3 ° C (82.9°F) |
20 ° C (68°F) |
% 55 | 60% | 0 | Sunrise:05:23 AM Sunset: 08:09 PM |
Moonrise:04:12 AM Moonset: 07:20 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
13.1 ° C (55.6°F) |
22.8 ° C (73.1°F) |
17.2 ° C (62.9°F) |
% 41 | 0% | 5 | Sunrise:05:22 AM Sunset: 08:10 PM |
Moonrise:04:44 AM Moonset: 08:44 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Sunny |
11 ° C (51.7°F) |
27.2 ° C (80.9°F) |
18.9 ° C (66°F) |
% 38 | 0% | 5 | Sunrise:05:21 AM Sunset: 08:11 PM |
Moonrise:05:27 AM Moonset: 10:05 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Sunny |
15.5 ° C (60°F) |
23.4 ° C (74.2°F) |
19 ° C (66.3°F) |
% 45 | 0% | 5 | Sunrise:05:20 AM Sunset: 08:12 PM |
Moonrise:06:23 AM Moonset: 11:14 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday |  Partly Cloudy |
11.6 ° C (52.9°F) |
24.7 ° C (76.4°F) |
17.5 ° C (63.5°F) |
% 52 | 0% | 5 | Sunrise:05:19 AM Sunset: 08:13 PM |
Moonrise:07:33 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Patchy rain nearby |
13.9 ° C (57.1°F) |
25 ° C (76.9°F) |
19.1 ° C (66.4°F) |
% 41 | 64% | 4 | Sunrise:05:18 AM Sunset: 08:14 PM |
Moonrise:08:51 AM Moonset: 12:07 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Sunny |
12.7 ° C (54.9°F) |
20.7 ° C (69.2°F) |
16.2 ° C (61.1°F) |
% 34 | 0% | 5 | Sunrise:05:17 AM Sunset: 08:15 PM |
Moonrise:10:11 AM Moonset: 12:47 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Partly Cloudy |
10.7 ° C (51.3°F) |
28.1 ° C (82.6°F) |
18.9 ° C (66°F) |
% 35 | 0% | 5 | Sunrise:05:16 AM Sunset: 08:16 PM |
Moonrise:11:29 AM Moonset: 01:18 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Sunny |
13.1 ° C (55.5°F) |
25.2 ° C (77.3°F) |
19.6 ° C (67.3°F) |
% 31 | 0% | 5 | Sunrise:05:15 AM Sunset: 08:17 PM |
Moonrise:12:42 PM Moonset: 01:42 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Sunny |
17.1 ° C (62.7°F) |
26.1 ° C (78.9°F) |
20.8 ° C (69.5°F) |
% 35 | 0% | 6 | Sunrise:05:15 AM Sunset: 08:18 PM |
Moonrise:01:52 PM Moonset: 02:02 AM Moon Phase ( Waxing Gibbous ) |
|
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