Lyons (Minnehaha County) — Weather
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30°C86°F· Clear · 26% cloud cover
Feels like 34°C93°F · Low 23°C74°F · High 32°C89°F
Wind
18 km/h5 m/s11 mph from W
Humidity
65%
Pressure
1007 hPa29.74 inHgstable
UV Index
3.8Moderate
Storm — heat
It's 30°C86°F and clear skies in Lyons at the moment.
🔥 Today's high of 32°C90°F sits 9.3°C37°F markedly warmer than the July mean (22°C72°F).
🌧️ Long-range outlook (in 12 days): Local instability on Saturday, with rain. Total ~1.5 mm. Below the monthly normal (74 mm/month). Confidence drops at this range — details may shift before then.
Hourly forecast
Detailed forecast for the next 60 hours
TemperaturePrecipitationWind
CAPE (J/kg)Instability Threshold
mminkm/hm/smphHumidity %
Daily Forecast
TodayNW 19 km/h5 m/s12 mph(gusts 341021)60%UV 56hToday60%NW 19 km/h5 m/s12 mph (gusts 341021)UV 56h
Today
NW 19 km/h5 m/s12 mph(gusts 341021)60%UV 56h
Today
60%
NW 19 km/h5 m/s12 mph (gusts 341021)
UV 5
6h
Today — Hourly Forecast
06:0415h21:03
TomorrowN 25 km/h7 m/s16 mph(gusts 431227)68%UV 310hTomorrow68%N 25 km/h7 m/s16 mph (gusts 431227)UV 310h
Tomorrow
N 25 km/h7 m/s16 mph(gusts 431227)68%UV 310h
Tomorrow
68%
N 25 km/h7 m/s16 mph (gusts 431227)
UV 3
10h
Tomorrow — Hourly Forecast
06:0515h21:02
WednesdayNE 7 km/h2 m/s5 mph(gusts 1348)69%UV 37hWednesday69%NE 7 km/h2 m/s5 mph (gusts 1348)UV 37h
Wednesday
NE 7 km/h2 m/s5 mph(gusts 1348)69%UV 37h
Wednesday
69%
NE 7 km/h2 m/s5 mph (gusts 1348)
UV 3
7h
Wednesday — Forecast Overview
06:0614.9h21:01
ThursdayS 20 km/h5 m/s12 mph(gusts 34921)76%UV 24hThursday76%S 20 km/h5 m/s12 mph (gusts 34921)UV 24h
Thursday
S 20 km/h5 m/s12 mph(gusts 34921)76%UV 24h
Thursday
76%
S 20 km/h5 m/s12 mph (gusts 34921)
UV 2
4h
Thursday — Forecast Overview
06:0714.9h21:00
FridayS 22 km/h6 m/s14 mph(gusts 381123)74%UV 213hFriday74%S 22 km/h6 m/s14 mph (gusts 381123)UV 213h
Friday
S 22 km/h6 m/s14 mph(gusts 381123)74%UV 213h
Friday
74%
S 22 km/h6 m/s14 mph (gusts 381123)
UV 2
13h
Friday — Forecast Overview
06:0814.9h20:59
SaturdayS 21 km/h6 m/s13 mph(gusts 361023)71%UV 38hSaturday71%S 21 km/h6 m/s13 mph (gusts 361023)UV 38h
Saturday
S 21 km/h6 m/s13 mph(gusts 361023)71%UV 38h
Saturday
71%
S 21 km/h6 m/s13 mph (gusts 361023)
UV 3
8h
Night
21°C70°F
Morning
25°C78°F
Afternoon
25°C78°F
Evening
36°C97°F
06:0914.8h20:58
SundaySW 16 km/h5 m/s10 mph(gusts 30818)67%UV 310hSunday67%SW 16 km/h5 m/s10 mph (gusts 30818)UV 310h
Sunday
SW 16 km/h5 m/s10 mph(gusts 30818)67%UV 310h
Sunday
67%
SW 16 km/h5 m/s10 mph (gusts 30818)
UV 3
10h
Night
27°C81°F
Morning
29°C84°F
Afternoon
29°C84°F
Evening
37°C99°F
06:1014.8h20:57
Monday0.7 mm0.03 inSE 23 km/h6 m/s14 mph(gusts 401125)60%UV 36hMonday60%SE 23 km/h6 m/s14 mph (gusts 401125)0.7 mm0.03 inUV 36h
Monday
0.7 mm0.03 inSE 23 km/h6 m/s14 mph(gusts 401125)60%UV 36h
Monday
60%
SE 23 km/h6 m/s14 mph (gusts 401125)
0.7 mm0.03 in
UV 3
6h
Night
28°C82°F
Morning
29°C84°F
Afternoon
29°C84°F
Evening
34°C92°F
06:1114.8h20:56
TuesdayS 29 km/h8 m/s18 mph(gusts 511432)30%13hTuesday30%S 29 km/h8 m/s18 mph (gusts 511432)13h
Tuesday
S 29 km/h8 m/s18 mph(gusts 511432)30%13h
Tuesday
30%
S 29 km/h8 m/s18 mph (gusts 511432)
13h
Night
26°C79°F
Morning
31°C88°F
Afternoon
31°C88°F
Evening
40°C103°F
06:1214.7h20:55
WednesdaySE 20 km/h6 m/s13 mph(gusts 431227)41%15hWednesday41%SE 20 km/h6 m/s13 mph (gusts 431227)15h
Wednesday
SE 20 km/h6 m/s13 mph(gusts 431227)41%15h
Wednesday
41%
SE 20 km/h6 m/s13 mph (gusts 431227)
15h
Night
24°C75°F
Morning
30°C85°F
Afternoon
30°C85°F
Evening
42°C108°F
06:1314.7h20:54
ThursdayNE 38 km/h11 m/s24 mph(gusts 581636)44%13hThursday44%NE 38 km/h11 m/s24 mph (gusts 581636)13h
Thursday
NE 38 km/h11 m/s24 mph(gusts 581636)44%13h
Thursday
44%
NE 38 km/h11 m/s24 mph (gusts 581636)
13h
Night
28°C82°F
Morning
33°C92°F
Afternoon
33°C92°F
Evening
34°C94°F
06:1414.6h20:53
FridayN 15 km/h4 m/s10 mph(gusts 30819)22%13hFriday22%N 15 km/h4 m/s10 mph (gusts 30819)13h
Friday
N 15 km/h4 m/s10 mph(gusts 30819)22%13h
Friday
22%
N 15 km/h4 m/s10 mph (gusts 30819)
13h
Night
20°C69°F
Morning
28°C82°F
Afternoon
28°C82°F
Evening
36°C96°F
06:1514.6h20:52
Saturday1.5 mm0.06 inSE 30 km/h8 m/s19 mph(gusts 601737)40%9hSaturday40%SE 30 km/h8 m/s19 mph (gusts 601737)1.5 mm0.06 in9h
Saturday
1.5 mm0.06 inSE 30 km/h8 m/s19 mph(gusts 601737)40%9h
Saturday
40%
SE 30 km/h8 m/s19 mph (gusts 601737)
1.5 mm0.06 in
9h
Night
22°C71°F
Morning
29°C83°F
Afternoon
29°C83°F
Evening
35°C95°F
06:1614.6h20:51
SundayNW 29 km/h8 m/s18 mph(gusts 481330)42%14hSunday42%NW 29 km/h8 m/s18 mph (gusts 481330)14h
Sunday
NW 29 km/h8 m/s18 mph(gusts 481330)42%14h
Sunday
42%
NW 29 km/h8 m/s18 mph (gusts 481330)
14h
Night
25°C76°F
Morning
28°C83°F
Afternoon
28°C83°F
Evening
33°C92°F
06:1714.5h20:49
MondayN 26 km/h7 m/s16 mph(gusts 501431)41%10hMonday41%N 26 km/h7 m/s16 mph (gusts 501431)10h
Monday
N 26 km/h7 m/s16 mph(gusts 501431)41%10h
Monday
41%
N 26 km/h7 m/s16 mph (gusts 501431)
10h
Night
18°C64°F
Morning
19°C66°F
Afternoon
19°C66°F
Evening
31°C88°F
06:1814.5h20:48
TuesdaySE 31 km/h9 m/s20 mph39%15hTuesday39%SE 31 km/h9 m/s20 mph15h
Tuesday
SE 31 km/h9 m/s20 mph39%15h
Tuesday
39%
SE 31 km/h9 m/s20 mph
15h
Night
18°C64°F
Morning
26°C80°F
Afternoon
26°C80°F
Evening
34°C94°F
06:1914.5h20:47
Sunrise
06:04
Civil Dawn 05:34
Sunset
21:03
Civil Dusk 21:33
Today vs. seasonal normal
+2.8°C+5.1°F
Lyons is located in South Dakota, United States. Elevation: 470m. Annual average temperature: 7.1°C. Annual precipitation: 608mm.
Frequently Asked Questions
What is the weather like in Lyons today?
Today in Lyons, United States, the temperature is 30°C with Clear. The high is 32°C and the low is 23°C.
What is the 16-day forecast for Lyons?
The 16-day forecast for Lyons shows the warmest day is Wednesday at 44°C, while the coolest night is Thursday at 13°C. 7 day(s) have precipitation expected.
What time is sunrise and sunset in Lyons?
In Lyons, sunrise is at 06:04 and sunset is at 21:03. Day length is approximately 14h 58m.
How accurate is the weather forecast for Lyons?
Our forecasts for Lyons use the DWD ICON model, one of the world's most advanced weather prediction systems. Accuracy is typically 85-90% for 1-3 day forecasts. Lyons has an annual average temperature of 7.1°C and receives 608mm of precipitation per year.
Last updated: 07/20/2026, 11:00 AM
July climate in Lyons
Normals for July: average 22°C (16–29°C), around 74 mm of rain across the month. About 15°C warmer than the annual average of 7.1°C.
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