Sun Valley, ID weather in March
March in Sun Valley: chilly and snowy. Highs 43°F, lows 19°F, rain or snow on about 8 days and about 10.5 in of snow. Expect snow on the ground at times.
- Normal high
- 43°F
- Normal low
- 19°F
- Wet days
- 8
- 1.8 in total
- Snowfall
- 10.5 in
- normal snowfall
How March changes from start to finish
| March 1 | March 31 | |
|---|---|---|
| Normal high | 38°F | 47°F |
| Normal low | 14°F | 23°F |
| Chance of a wet day | 30% | 25% |
| Sunrise / sunset | 7:13 am / 6:25 pm | 7:20 am / 8:02 pm |
| Daylight | 11.2 h | 12.7 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in5 of 31
- Freezing nightslow 32°F or below30 of 31
Average days per March, counted from daily records for each year 1991-2020.
Rain and snow in March
Normal precipitation is 1.8 in; a dry March brings about 0.8 in and a wet one about 2.2 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 10.5 in, with about 4 days of an inch or more.
How March varies from year to year
- Warmest March, 1991-20201992: average high 53°F
- Coolest March2002: average high 37°F
- Wettest March2012: 4.8 in
- Driest March1994: 0.05 in
- Highest reading67°F (March 18, 2007)
- Lowest reading-8°F (March 5, 1998)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
March compared with February and April
| February | March | April | |
|---|---|---|---|
| Normal high | 35°F | 43°F | 52°F |
| Normal low | 11°F | 19°F | 27°F |
| Wet days | 9 | 8 | 7 |
| Comfortable days | 0 | 0 | 3 |
| Daylight | 10.5 h | 11.9 h | 13.4 h |
Highs change by +8°F from February and +9°F into April.
Nearby alternatives in March
- Warmer: Boise, ID93 mi · high 56°F · 10 wet days
How Sun Valley ranks in March
- Normal high342nd warmest of 378 cities; 2nd of 2 in Idaho
- Wet days145th driest of 378
- Comfortable days327th most of 339
What to pack for Sun Valley in March
- A warm jacket – lows near 19°F, highs near 43°F
- A rain jacket or umbrella – rain or snow on about 8 days
- Waterproof boots – about 10.5 in of snow in a typical year
- A hat and gloves – about 30 freezing nights
Heating and cooling
March has 1065 heating degree days and 0 cooling degree days (base 65°F), 12% of the year's total heating and cooling demand.
Questions
How cold is Sun Valley in March?
The normal high is 43°F and the normal low is 19°F. From 1991 to 2020 the coldest March reading was -8°F (March 5, 1998).
Does it rain a lot in Sun Valley in March?
About 8 days in March have at least 0.01 in of precipitation, and the normal total is 1.8 in. The wettest March in 1991-2020 was in 2012 (4.8 in); the driest was in 1994 (0.05 in).
Does it snow in Sun Valley in March?
Yes. Normal snowfall in March is 10.5 in.
Where the numbers come from
- Temperature, rain and snowfall: Ketchum RS (USC00104845), 1.0 mi SSW of the city center, 5,890 ft (62 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Bellevue (USC00100774), 17 mi SSE of the city center, 5,192 ft (760 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Stanley Ranger Station (726824-04112), 44 mi NW of the city center, 6,495 ft (543 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: snow depth, humidity and wind by hour and cloud cover (no station close enough or similar enough in elevation).