Allen, SD Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Allen, SD in one place.
Mostly clear, with a low around 44. South wind 8 to 12 mph, with gusts as high as 18 mph.
Local Weather Overview
This forecast page for Allen, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 13, 2026 4:29 AM MDT.
The active forecast window currently covers May 13 to May 19, 2026 for Allen, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 13 to May 19, 2026
- Latest sync
- May 13, 2026 4:29 AM MDT
- Forecast office
- UNR
- Source
- NOAA / NWS
Daily Outlook
This Week in Allen
Wednesday looks like the warmest upcoming period in Allen at 86 degrees F.
Monday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Sunday Night at about 20 to 29 mph N.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- May 13, 2026 4:29 AM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- UNR
- Radar station
- KUDX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny, with a high near 86. South wind 13 to 23 mph, with gusts as high as 31 mph.
A slight chance of rain showers between midnight and 3am. Mostly cloudy. Low around 57, with temperatures rising to around 59 overnight. South wind 22 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 81. Northwest wind 14 to 23 mph, with gusts as high as 31 mph.
Mostly clear. Low around 44, with temperatures rising to around 48 overnight. Northwest wind 7 to 16 mph, with gusts as high as 26 mph.
Sunny, with a high near 79. Northwest wind 8 to 14 mph, with gusts as high as 28 mph.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 82.
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
A chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 70.
Showers and thunderstorms likely. Mostly cloudy, with a low around 39.
A chance of rain showers. Mostly cloudy, with a high near 55.
A slight chance of rain showers before midnight. Mostly cloudy, with a low around 35.
Mostly sunny, with a high near 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 13
|
Mostly Clear
|
44°F |
8 to 12 mph
S
|
|
Wednesday
May 13
|
Sunny
|
86°F |
13 to 23 mph
S
|
|
Wednesday Night
May 13
|
Mostly Cloudy then Slight Chance Rain Showers
|
57°F |
22 to 28 mph
S
|
|
Thursday
May 14
|
Mostly Sunny
|
81°F |
14 to 23 mph
NW
|
|
Thursday Night
May 14
|
Mostly Clear
|
44°F |
7 to 16 mph
NW
|
|
Friday
May 15
|
Sunny
|
79°F |
8 to 14 mph
NW
|
|
Friday Night
May 15
|
Partly Cloudy
|
46°F |
9 to 13 mph
NE
|
|
Saturday
May 16
|
Mostly Sunny
|
82°F |
10 to 15 mph
E
|
|
Saturday Night
May 16
|
Chance Showers And Thunderstorms
|
47°F |
12 to 17 mph
SE
|
|
Sunday
May 17
|
Chance Showers And Thunderstorms
|
70°F |
12 to 25 mph
N
|
|
Sunday Night
May 17
|
Showers And Thunderstorms Likely
|
39°F |
20 to 29 mph
N
|
|
Monday
May 18
|
Chance Rain Showers
|
55°F |
24 mph
NW
|
|
Monday Night
May 18
|
Slight Chance Rain Showers then Mostly Cloudy
|
35°F |
12 to 23 mph
NW
|
|
Tuesday
May 19
|
Mostly Sunny
|
64°F |
13 to 20 mph
NW
|
Nearby Forecasts
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