Current weather conditions and 15 day weather forecast for Iona, 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.
| 09 August 2026 Sunday 27.2 ° C / 81°F ![]() Clear |
Feels Like : 28.2 ° C / 82.8°F Humidity : % 59 Pressure : 1004 mb Wind Speed : 23.8 kmph / 14.8 miles from SE ![]() Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 08 August 2026 Saturday | Sunny |
13.7 ° C (56.7°F) |
32.4 ° C (90.3°F) |
23.3 ° C (74°F) |
% 59 | 4% | 6.4 | Sunrise:06:34 AM Sunset: 08:51 PM |
Moonrise:01:06 AM Moonset: 05:44 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Sunny |
20.4 ° C (68.7°F) |
36.6 ° C (97.9°F) |
28.6 ° C (83.4°F) |
% 49 | 2% | 5.6 | Sunrise:06:36 AM Sunset: 08:50 PM |
Moonrise:02:03 AM Moonset: 06:46 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Sunny |
20.6 ° C (69°F) |
40.5 ° C (105°F) |
29.8 ° C (85.6°F) |
% 49 | 57% | 6.2 | Sunrise:06:37 AM Sunset: 08:49 PM |
Moonrise:03:15 AM Moonset: 07:36 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
19.4 ° C (66.8°F) |
35.2 ° C (95.3°F) |
26.4 ° C (79.5°F) |
% 57 | 36% | 6 | Sunrise:06:38 AM Sunset: 08:47 PM |
Moonrise:04:36 AM Moonset: 08:16 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
20.8 ° C (69.5°F) |
37.8 ° C (100°F) |
27.6 ° C (81.8°F) |
% 51 | 57% | 6.2 | Sunrise:06:39 AM Sunset: 08:46 PM |
Moonrise:06:02 AM Moonset: 08:47 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Sunny |
18.5 ° C (65.3°F) |
29.7 ° C (85.5°F) |
23.6 ° C (74.5°F) |
% 59 | 36% | 7 | Sunrise:06:40 AM Sunset: 08:44 PM |
Moonrise:07:26 AM Moonset: 09:13 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Sunny |
16.5 ° C (61.6°F) |
32.9 ° C (91.2°F) |
24.8 ° C (76.6°F) |
% 43 | 1% | 8 | Sunrise:06:41 AM Sunset: 08:43 PM |
Moonrise:08:47 AM Moonset: 09:35 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
21.9 ° C (71.3°F) |
34.9 ° C (94.8°F) |
27.6 ° C (81.8°F) |
% 46 | 2% | 8 | Sunrise:06:42 AM Sunset: 08:41 PM |
Moonrise:10:06 AM Moonset: 09:57 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Sunny |
22.2 ° C (71.9°F) |
38.3 ° C (100.9°F) |
29.6 ° C (85.3°F) |
% 55 | 3% | 9 | Sunrise:06:43 AM Sunset: 08:40 PM |
Moonrise:11:22 AM Moonset: 10:19 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday | Sunny |
20.2 ° C (68.4°F) |
35.4 ° C (95.8°F) |
27.2 ° C (80.9°F) |
% 61 | 57% | 9 | Sunrise:06:44 AM Sunset: 08:38 PM |
Moonrise:12:37 PM Moonset: 10:44 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday | Sunny |
21.3 ° C (70.4°F) |
38.5 ° C (101.2°F) |
29.4 ° C (85°F) |
% 42 | 17% | 9 | Sunrise:06:46 AM Sunset: 08:37 PM |
Moonrise:01:50 PM Moonset: 11:12 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday | Sunny |
20.3 ° C (68.5°F) |
32.1 ° C (89.8°F) |
25.7 ° C (78.2°F) |
% 44 | 57% | 8 | Sunrise:06:47 AM Sunset: 08:35 PM |
Moonrise:03:01 PM Moonset: 11:46 PM Moon Phase ( First Quarter ) |
|
| 20 August 2026 Thursday | Sunny |
16.9 ° C (62.4°F) |
31.4 ° C (88.5°F) |
24 ° C (75.2°F) |
% 52 | 3% | 8 | Sunrise:06:48 AM Sunset: 08:33 PM |
Moonrise:04:07 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 21 August 2026 Friday | Sunny |
20.5 ° C (68.8°F) |
37.5 ° C (99.5°F) |
28.8 ° C (83.9°F) |
% 43 | 36% | 9 | Sunrise:06:49 AM Sunset: 08:32 PM |
Moonrise:05:06 PM Moonset: 12:28 AM Moon Phase ( First Quarter ) |
|