Sun Valley climate

Sun Valley Weather in March

NOAA 1991-2020 normals for Ketchum RS, 1.6 km from Sun Valley

Average highs run from 38°F on March 1 to 47°F on March 31, and lows from 14°F to 23°F. Normal precipitation for the month is 1.76 in over about 8 wet days.

March day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Sun Valley, in °F, with the record for each date.020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
43°F
Average low
19°F
Precipitation
1.76 in
Snowfall
10.5 in
Record high
77°FMar 19, 2026
Record low
6°FMar 7, 2023
Chance of a freeze
100%
Daylight
11 h 12 min to 12 h 43 min
Cloud cover
64%
Humidity
74%
Dew point
21°F
Wind
7.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Mar 138°F14°F51°F 202514°F 202131%24%
Mar 239°F15°F53°F 20228°F 202330%23%
Mar 339°F15°F53°F 202210°F 201930%23%
Mar 439°F15°F56°F 20168°F 201930%22%
Mar 539°F15°F55°F 201610°F 201830%22%
Mar 640°F16°F56°F 201510°F 201829%21%
Mar 740°F16°F62°F 20156°F 202329%21%
Mar 840°F16°F62°F 20268°F 202429%20%
Mar 941°F17°F60°F 20158°F 202329%20%
Mar 1041°F17°F63°F 20156°F 202228%19%
Mar 1141°F17°F59°F 201511°F 202228%19%
Mar 1241°F18°F62°F 201515°F 201928%18%
Mar 1342°F18°F63°F 201521°F 202428%18%
Mar 1442°F18°F65°F 201518°F 201927%17%
Mar 1542°F19°F65°F 201517°F 201927%17%
Mar 1643°F19°F65°F 202615°F 202327%16%
Mar 1743°F19°F72°F 202612°F 202327%16%
Mar 1843°F19°F76°F 202613°F 202326%15%
Mar 1944°F20°F77°F 202614°F 202526%15%
Mar 2044°F20°F77°F 202627°F 201926%15%
Mar 2144°F20°F76°F 202623°F 202526%14%
Mar 2244°F21°F69°F 202621°F 202325%14%
Mar 2345°F21°F65°F 202625°F 201625%13%
Mar 2445°F21°F69°F 202623°F 202125%13%
Mar 2545°F21°F70°F 202614°F 202325%13%
Mar 2646°F22°F70°F 202515°F 202325%12%
Mar 2746°F22°F70°F 202512°F 202325%12%
Mar 2846°F22°F70°F 202623°F 202325%12%
Mar 2946°F23°F69°F 202624°F 202425%11%
Mar 3047°F23°F69°F 201518°F 202125%11%
Mar 3147°F23°F66°F 201522°F 202124%11%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Sun Valley, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

March 1
sunrise 7:14 AM, sunset 6:26 PM
March 31
sunrise 7:20 AM, sunset 8:03 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00104845 (Ketchum RS), public domain. Records: NOAA GHCN-Daily, station USC00100774, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.