Jefferson Weather Forecast 15 Days, Weather in Jefferson Today
Current weather conditions and 15 day weather forecast for Jefferson, 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 Jefferson
| 10 May 2026 Sunday 10.6 ° C / 51.1°F  Sunny |
Feels Like : 8.7 ° C / 47.7°F Humidity : % 46 Pressure : 1022 mb Wind Speed : 14.4 kmph / 8.9 miles from W  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Jefferson, SD, USA
Weather Forecast for next 15 Days for Jefferson 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 Jefferson, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 May 2026 Sunday | Sunny |
2.4 ° C (36.3°F) |
24.8 ° C (76.6°F) |
14.2 ° C (57.6°F) |
% 40 | 0% | 7 | Sunrise:06:09 AM Sunset: 08:36 PM |
Moonrise:02:58 AM Moonset: 01:38 PM Moon Phase ( Waning Crescent ) |
|
| 11 May 2026 Monday |  Partly Cloudy |
9.3 ° C (48.8°F) |
27.7 ° C (81.9°F) |
18.3 ° C (64.9°F) |
% 39 | 0% | 6.3 | Sunrise:06:08 AM Sunset: 08:37 PM |
Moonrise:03:20 AM Moonset: 02:46 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday | Sunny |
15.6 ° C (60°F) |
24.6 ° C (76.3°F) |
20.4 ° C (68.7°F) |
% 35 | 0% | 0.1 | Sunrise:06:07 AM Sunset: 08:38 PM |
Moonrise:03:41 AM Moonset: 03:57 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Sunny |
11.5 ° C (52.6°F) |
25.8 ° C (78.4°F) |
18.8 ° C (65.9°F) |
% 38 | 0% | 5 | Sunrise:06:06 AM Sunset: 08:40 PM |
Moonrise:04:01 AM Moonset: 05:11 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
13.2 ° C (55.7°F) |
29.8 ° C (85.7°F) |
21.7 ° C (71°F) |
% 51 | 0% | 6 | Sunrise:06:05 AM Sunset: 08:41 PM |
Moonrise:04:24 AM Moonset: 06:28 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Sunny |
20.5 ° C (68.9°F) |
32.8 ° C (91.1°F) |
25.6 ° C (78.1°F) |
% 49 | 0% | 7 | Sunrise:06:04 AM Sunset: 08:42 PM |
Moonrise:04:52 AM Moonset: 07:50 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
14.2 ° C (57.5°F) |
25.8 ° C (78.5°F) |
20.1 ° C (68.1°F) |
% 39 | 0% | 6 | Sunrise:06:03 AM Sunset: 08:43 PM |
Moonrise:05:26 AM Moonset: 09:14 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Partly Cloudy |
11.4 ° C (52.5°F) |
22 ° C (71.5°F) |
15.7 ° C (60.2°F) |
% 47 | 0% | 5 | Sunrise:06:02 AM Sunset: 08:44 PM |
Moonrise:06:10 AM Moonset: 10:33 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Sunny |
11 ° C (51.8°F) |
27.7 ° C (81.9°F) |
19.7 ° C (67.4°F) |
% 40 | 0% | 5 | Sunrise:06:01 AM Sunset: 08:45 PM |
Moonrise:07:07 AM Moonset: 11:42 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Sunny |
15.6 ° C (60.2°F) |
35.3 ° C (95.5°F) |
25.7 ° C (78.2°F) |
% 55 | 0% | 7 | Sunrise:06:00 AM Sunset: 08:46 PM |
Moonrise:08:16 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday |  Patchy rain nearby |
19.8 ° C (67.7°F) |
33.9 ° C (93°F) |
26 ° C (78.7°F) |
% 66 | 70% | 6 | Sunrise:05:59 AM Sunset: 08:47 PM |
Moonrise:09:33 AM Moonset: 12:37 AM Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Patchy rain nearby |
19 ° C (66.1°F) |
30.3 ° C (86.5°F) |
24.1 ° C (75.4°F) |
% 71 | 63% | 5 | Sunrise:05:58 AM Sunset: 08:48 PM |
Moonrise:10:52 AM Moonset: 01:19 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday |  Thundery outbreaks in nearby |
19.6 ° C (67.4°F) |
30.3 ° C (86.5°F) |
23.6 ° C (74.5°F) |
% 79 | 0% | 5 | Sunrise:05:58 AM Sunset: 08:49 PM |
Moonrise:12:08 PM Moonset: 01:50 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Patchy rain nearby |
21.8 ° C (71.2°F) |
33.3 ° C (92°F) |
26.4 ° C (79.5°F) |
% 68 | 72% | 6 | Sunrise:05:57 AM Sunset: 08:50 PM |
Moonrise:01:20 PM Moonset: 02:15 AM Moon Phase ( First Quarter ) |
|
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