Extended 10-day forecasts, Keystone (SD)
Hourly detail for the next 48 hours, six-hourly segments for the rest of the week.
This is the 10-day extended forecast for Keystone, the United States of America. The forecast is updated every three hours and displays the temperature, weather conditions, wind direction and speed, as well as the chance of precipitation.
Check out our September climate page to see if the current temperatures in Keystone is typical for this time of year.
Today · Wednesday 2 Sep
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 02:00 |
Clear skies
|
13°C (55°F) | 0 mm (0 in) | 98% | SW 4 m/s (8 knots) |
| 03:00 |
Clear skies
|
13°C (55°F) | 0 mm (0 in) | 94% | SW 4 m/s (8 knots) |
| 04:00 |
Clear skies
|
14°C (57°F) | 0 mm (0 in) | 91% | SW 4 m/s (8 knots) |
| 05:00 |
Clear skies
|
13°C (55°F) | 0 mm (0 in) | 88% | W 4 m/s (8 knots) |
| 06:00 |
Clear skies
|
13°C (55°F) | 0 mm (0 in) | 82% | W 4 m/s (8 knots) |
| 07:00 |
Clear skies
|
15°C (59°F) | 0 mm (0 in) | 75% | W 4 m/s (8 knots) |
| 08:00 |
Mostly sunny
|
18°C (64°F) | 0 mm (0 in) | 67% | S 2 m/s (4 knots) |
| 09:00 |
Fog
|
20°C (68°F) | 0 mm (0 in) | 65% | SE 2 m/s (4 knots) |
| 10:00 |
Mostly sunny
|
22°C (72°F) | 0 mm (0 in) | 57% | S 3 m/s (6 knots) |
| 11:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 49% | S 3 m/s (6 knots) |
| 12:00 |
Clear skies
|
26°C (79°F) | 0 mm (0 in) | 43% | S 3 m/s (6 knots) |
| 13:00 |
Mostly sunny
|
28°C (82°F) | 0 mm (0 in) | 32% | S 4 m/s (8 knots) |
| 14:00 |
Mostly sunny
|
29°C (84°F) | 0 mm (0 in) | 21% | SW 5 m/s (10 knots) |
| 15:00 |
Mostly sunny
|
29°C (84°F) | 0 mm (0 in) | 23% | SW 5 m/s (10 knots) |
| 16:00 |
Mostly sunny
|
29°C (84°F) | 0 mm (0 in) | 25% | S 5 m/s (10 knots) |
| 17:00 |
Mostly sunny
|
29°C (84°F) | 0 mm (0 in) | 22% | S 5 m/s (10 knots) |
| 18:00 |
Clear skies
|
28°C (82°F) | 0 mm (0 in) | 23% | SW 4 m/s (8 knots) |
| 19:00 |
Mostly clear
|
23°C (73°F) | 0 mm (0 in) | 34% | S 3 m/s (6 knots) |
| 20:00 |
Clear skies
|
21°C (70°F) | 0 mm (0 in) | 40% | S 5 m/s (10 knots) |
| 21:00 |
Clear skies
|
21°C (70°F) | 0 mm (0 in) | 43% | SW 4 m/s (8 knots) |
| 22:00 |
Mostly clear
|
20°C (68°F) | 0 mm (0 in) | 45% | SW 5 m/s (10 knots) |
| 23:00 |
Mostly clear
|
20°C (68°F) | 0 mm (0 in) | 43% | SW 5 m/s (10 knots) |
02:00
Clear skies
98% · SW 4 m/s (8 knots)
13°C (55°F)
0 mm (0 in)
03:00
Clear skies
94% · SW 4 m/s (8 knots)
13°C (55°F)
0 mm (0 in)
04:00
Clear skies
91% · SW 4 m/s (8 knots)
14°C (57°F)
0 mm (0 in)
05:00
Clear skies
88% · W 4 m/s (8 knots)
13°C (55°F)
0 mm (0 in)
06:00
Clear skies
82% · W 4 m/s (8 knots)
13°C (55°F)
0 mm (0 in)
07:00
Clear skies
75% · W 4 m/s (8 knots)
15°C (59°F)
0 mm (0 in)
08:00
Mostly sunny
67% · S 2 m/s (4 knots)
18°C (64°F)
0 mm (0 in)
09:00
Fog
65% · SE 2 m/s (4 knots)
20°C (68°F)
0 mm (0 in)
10:00
Mostly sunny
57% · S 3 m/s (6 knots)
22°C (72°F)
0 mm (0 in)
11:00
Clear skies
49% · S 3 m/s (6 knots)
25°C (77°F)
0 mm (0 in)
12:00
Clear skies
43% · S 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
13:00
Mostly sunny
32% · S 4 m/s (8 knots)
28°C (82°F)
0 mm (0 in)
14:00
Mostly sunny
21% · SW 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
15:00
Mostly sunny
23% · SW 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
16:00
Mostly sunny
25% · S 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
17:00
Mostly sunny
22% · S 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
18:00
Clear skies
23% · SW 4 m/s (8 knots)
28°C (82°F)
0 mm (0 in)
19:00
Mostly clear
34% · S 3 m/s (6 knots)
23°C (73°F)
0 mm (0 in)
20:00
Clear skies
40% · S 5 m/s (10 knots)
21°C (70°F)
0 mm (0 in)
21:00
Clear skies
43% · SW 4 m/s (8 knots)
21°C (70°F)
0 mm (0 in)
22:00
Mostly clear
45% · SW 5 m/s (10 knots)
20°C (68°F)
0 mm (0 in)
23:00
Mostly clear
43% · SW 5 m/s (10 knots)
20°C (68°F)
0 mm (0 in)
Tomorrow · Thursday 3 Sep
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 00:00 |
Mostly clear
|
21°C (70°F) | 0 mm (0 in) | 39% | W 6 m/s (12 knots) |
| 01:00 |
Partly cloudy
|
20°C (68°F) | 0 mm (0 in) | 39% | W 5 m/s (10 knots) |
| 02:00 |
Partly cloudy
|
20°C (68°F) | 0 mm (0 in) | 42% | W 5 m/s (10 knots) |
| 03:00 |
Mostly clear
|
19°C (66°F) | 0 mm (0 in) | 44% | W 5 m/s (10 knots) |
| 04:00 |
Mostly clear
|
19°C (66°F) | 0 mm (0 in) | 46% | W 5 m/s (10 knots) |
| 05:00 |
Partly cloudy
|
19°C (66°F) | 0 mm (0 in) | 47% | W 6 m/s (12 knots) |
| 06:00 |
Mostly sunny
|
19°C (66°F) | 0 mm (0 in) | 47% | W 6 m/s (12 knots) |
| 07:00 |
Clear skies
|
19°C (66°F) | 0 mm (0 in) | 46% | W 7 m/s (14 knots) |
| 08:00 |
Clear skies
|
21°C (70°F) | 0 mm (0 in) | 43% | W 6 m/s (12 knots) |
| 09:00 |
Clear skies
|
23°C (73°F) | 0 mm (0 in) | 36% | W 4 m/s (8 knots) |
| 10:00 |
Mostly sunny
|
26°C (79°F) | 0 mm (0 in) | 26% | N 2 m/s (4 knots) |
| 11:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 23% | E 2 m/s (4 knots) |
| 12:00 |
Clear skies
|
28°C (82°F) | 0 mm (0 in) | 21% | SE 3 m/s (6 knots) |
| 13:00 |
Mostly sunny
|
28°C (82°F) | 0 mm (0 in) | 21% | SE 4 m/s (8 knots) |
| 14:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 19% | SW 4 m/s (8 knots) |
| 15:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 19% | SW 5 m/s (10 knots) |
| 16:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 21% | SW 5 m/s (10 knots) |
| 17:00 |
Clear skies
|
28°C (82°F) | 0 mm (0 in) | 21% | SW 4 m/s (8 knots) |
| 18:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 23% | S 3 m/s (6 knots) |
| 19:00 |
Clear skies
|
24°C (75°F) | 0 mm (0 in) | 32% | S 3 m/s (6 knots) |
| 20:00 |
Clear skies
|
20°C (68°F) | 0 mm (0 in) | 35% | W 3 m/s (6 knots) |
| 21:00 |
Clear skies
|
18°C (64°F) | 0 mm (0 in) | 42% | W 2 m/s (4 knots) |
| 22:00 |
Clear skies
|
18°C (64°F) | 0 mm (0 in) | 42% | SW 3 m/s (6 knots) |
| 23:00 |
Clear skies
|
19°C (66°F) | 0 mm (0 in) | 53% | SW 3 m/s (6 knots) |
00:00
Mostly clear
39% · W 6 m/s (12 knots)
21°C (70°F)
0 mm (0 in)
01:00
Partly cloudy
39% · W 5 m/s (10 knots)
20°C (68°F)
0 mm (0 in)
02:00
Partly cloudy
42% · W 5 m/s (10 knots)
20°C (68°F)
0 mm (0 in)
03:00
Mostly clear
44% · W 5 m/s (10 knots)
19°C (66°F)
0 mm (0 in)
04:00
Mostly clear
46% · W 5 m/s (10 knots)
19°C (66°F)
0 mm (0 in)
05:00
Partly cloudy
47% · W 6 m/s (12 knots)
19°C (66°F)
0 mm (0 in)
06:00
Mostly sunny
47% · W 6 m/s (12 knots)
19°C (66°F)
0 mm (0 in)
07:00
Clear skies
46% · W 7 m/s (14 knots)
19°C (66°F)
0 mm (0 in)
08:00
Clear skies
43% · W 6 m/s (12 knots)
21°C (70°F)
0 mm (0 in)
09:00
Clear skies
36% · W 4 m/s (8 knots)
23°C (73°F)
0 mm (0 in)
10:00
Mostly sunny
26% · N 2 m/s (4 knots)
26°C (79°F)
0 mm (0 in)
11:00
Clear skies
23% · E 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
12:00
Clear skies
21% · SE 3 m/s (6 knots)
28°C (82°F)
0 mm (0 in)
13:00
Mostly sunny
21% · SE 4 m/s (8 knots)
28°C (82°F)
0 mm (0 in)
14:00
Clear skies
19% · SW 4 m/s (8 knots)
29°C (84°F)
0 mm (0 in)
15:00
Clear skies
19% · SW 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
16:00
Clear skies
21% · SW 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
17:00
Clear skies
21% · SW 4 m/s (8 knots)
28°C (82°F)
0 mm (0 in)
18:00
Clear skies
23% · S 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
19:00
Clear skies
32% · S 3 m/s (6 knots)
24°C (75°F)
0 mm (0 in)
20:00
Clear skies
35% · W 3 m/s (6 knots)
20°C (68°F)
0 mm (0 in)
21:00
Clear skies
42% · W 2 m/s (4 knots)
18°C (64°F)
0 mm (0 in)
22:00
Clear skies
42% · SW 3 m/s (6 knots)
18°C (64°F)
0 mm (0 in)
23:00
Clear skies
53% · SW 3 m/s (6 knots)
19°C (66°F)
0 mm (0 in)
Next 7 days
Six-hour segments
Day
Night
00:00
Morning
06:00
Afternoon
12:00
Evening
18:00
Friday
4 Sep
18°C (64°F)
0 mm (0 in)
Clear skies
59% · SW 3 m/s (6 knots)
18°C (64°F)
0.1 mm (0 in)
Clear skies
57% · SW 4 m/s (8 knots)
30°C (86°F)
0 mm (0 in)
Mostly sunny
26% · S 5 m/s (10 knots)
29°C (84°F)
0 mm (0 in)
Mostly clear
29% · SE 5 m/s (10 knots)
Fri
4 Sep
night
18°C (64°F)
0 mm (0 in)
Clear skies
59%
3 m/s (6 knots)
morning
18°C (64°F)
0.1 mm (0 in)
Clear skies
57%
4 m/s (8 knots)
afternoon
30°C (86°F)
0 mm (0 in)
Mostly sunny
26%
5 m/s (10 knots)
evening
29°C (84°F)
0 mm (0 in)
Mostly clear
29%
5 m/s (10 knots)
Saturday
5 Sep
23°C (73°F)
0 mm (0 in)
Clear skies
52% · SW 5 m/s (10 knots)
22°C (72°F)
0 mm (0 in)
Clear skies
40% · W 5 m/s (10 knots)
33°C (91°F)
0 mm (0 in)
Clear skies
18% · S 1 m/s (2 knots)
31°C (88°F)
0 mm (0 in)
Mostly clear
22% · NE 2 m/s (4 knots)
Sat
5 Sep
night
23°C (73°F)
0 mm (0 in)
Clear skies
52%
5 m/s (10 knots)
morning
22°C (72°F)
0 mm (0 in)
Clear skies
40%
5 m/s (10 knots)
afternoon
33°C (91°F)
0 mm (0 in)
Clear skies
18%
1 m/s (2 knots)
evening
31°C (88°F)
0 mm (0 in)
Mostly clear
22%
2 m/s (4 knots)
Sunday
6 Sep
22°C (72°F)
0 mm (0 in)
Clear skies
44% · SW 3 m/s (6 knots)
20°C (68°F)
0.1 mm (0 in)
Partly cloudy
53% · W 4 m/s (8 knots)
29°C (84°F)
0.8 mm (0.03 in)
Light rain
34% · NE 1 m/s (2 knots)
23°C (73°F)
0.2 mm (0.01 in)
Partly cloudy
75% · NE 4 m/s (8 knots)
Sun
6 Sep
night
22°C (72°F)
0 mm (0 in)
Clear skies
44%
3 m/s (6 knots)
morning
20°C (68°F)
0.1 mm (0 in)
Partly cloudy
53%
4 m/s (8 knots)
afternoon
29°C (84°F)
0.8 mm (0.03 in)
Light rain
34%
1 m/s (2 knots)
evening
23°C (73°F)
0.2 mm (0.01 in)
Partly cloudy
75%
4 m/s (8 knots)
Monday
7 Sep
19°C (66°F)
1.5 mm (0.1 in)
Rain showers
87% · SW 1 m/s (2 knots)
18°C (64°F)
0 mm (0 in)
Cloudy
94% · SE 1 m/s (2 knots)
29°C (84°F)
0 mm (0 in)
Mostly sunny
46% · S 4 m/s (8 knots)
30°C (86°F)
0.2 mm (0.01 in)
Mostly clear
30% · S 3 m/s (6 knots)
Mon
7 Sep
night
19°C (66°F)
1.5 mm (0.1 in)
Rain showers
87%
1 m/s (2 knots)
morning
18°C (64°F)
0 mm (0 in)
Cloudy
94%
1 m/s (2 knots)
afternoon
29°C (84°F)
0 mm (0 in)
Mostly sunny
46%
4 m/s (8 knots)
evening
30°C (86°F)
0.2 mm (0.01 in)
Mostly clear
30%
3 m/s (6 knots)
Tuesday
8 Sep
22°C (72°F)
0 mm (0 in)
Mostly clear
58% · SW 4 m/s (8 knots)
21°C (70°F)
0 mm (0 in)
Partly cloudy
48% · W 4 m/s (8 knots)
27°C (81°F)
0 mm (0 in)
Partly cloudy
39% · NE 2 m/s (4 knots)
26°C (79°F)
0 mm (0 in)
Cloudy
34% · NE 3 m/s (6 knots)
Tue
8 Sep
night
22°C (72°F)
0 mm (0 in)
Mostly clear
58%
4 m/s (8 knots)
morning
21°C (70°F)
0 mm (0 in)
Partly cloudy
48%
4 m/s (8 knots)
afternoon
27°C (81°F)
0 mm (0 in)
Partly cloudy
39%
2 m/s (4 knots)
evening
26°C (79°F)
0 mm (0 in)
Cloudy
34%
3 m/s (6 knots)
Wednesday
9 Sep
16°C (61°F)
0 mm (0 in)
Clear skies
40% · NW 4 m/s (8 knots)
14°C (57°F)
0 mm (0 in)
Clear skies
56% · NW 4 m/s (8 knots)
23°C (73°F)
0 mm (0 in)
Partly cloudy
34% · SE 3 m/s (6 knots)
23°C (73°F)
0 mm (0 in)
Clear skies
33% · SE 4 m/s (8 knots)
Wed
9 Sep
night
16°C (61°F)
0 mm (0 in)
Clear skies
40%
4 m/s (8 knots)
morning
14°C (57°F)
0 mm (0 in)
Clear skies
56%
4 m/s (8 knots)
afternoon
23°C (73°F)
0 mm (0 in)
Partly cloudy
34%
3 m/s (6 knots)
evening
23°C (73°F)
0 mm (0 in)
Clear skies
33%
4 m/s (8 knots)
Thursday
10 Sep
16°C (61°F)
0 mm (0 in)
Clear skies
62% · SW 2 m/s (4 knots)
15°C (59°F)
0 mm (0 in)
Clear skies
68% · SW 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
Clear skies
44% · S 5 m/s (10 knots)
27°C (81°F)
0 mm (0 in)
Partly cloudy
42% · SE 1 m/s (2 knots)
Thu
10 Sep
night
16°C (61°F)
0 mm (0 in)
Clear skies
62%
2 m/s (4 knots)
morning
15°C (59°F)
0 mm (0 in)
Clear skies
68%
3 m/s (6 knots)
afternoon
27°C (81°F)
0 mm (0 in)
Clear skies
44%
5 m/s (10 knots)
evening
27°C (81°F)
0 mm (0 in)
Partly cloudy
42%
1 m/s (2 knots)
Data from MET Norway.
Prefer the quick-glance version? See the 10-day summary.
Keystone weather by month
Browse monthly averages for Keystone: climate by month with temperature, rainfall and sunshine.
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