Lewis and Clark County Weather in March
Average highs run from 40°F on March 1 to 50°F on March 31, and lows from 18°F to 27°F. Normal precipitation for the month is 0.88 in over about 7 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 45°F
- Average low
- 23°F
- Precipitation
- 0.88 in
- Snowfall
- 2.7 in
- Record high
- 75°FMar 30, 2004
- Record low
- -40°FMar 3, 2019
- Chance of a freeze
- 100%
- Daylight
- 11 h 06 min to 12 h 48 min
- Cloud cover
- 72%
- Humidity
- 83%
- Dew point
- 22°F
- Wind
- 6.5 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Mar 1 | 40°F | 18°F | 64°F 1992 | -20°F 2014 | 25% | 10% |
| Mar 2 | 40°F | 18°F | 65°F 1968 | -37°F 2019 | 24% | 10% |
| Mar 3 | 41°F | 19°F | 60°F 1968 | -40°F 2019 | 24% | 10% |
| Mar 4 | 41°F | 19°F | 66°F 1987 | -40°F 2019 | 24% | 10% |
| Mar 5 | 41°F | 19°F | 65°F 1987 | -18°F 2019 | 24% | 9% |
| Mar 6 | 42°F | 20°F | 64°F 2020 | -6°F 2003 | 24% | 9% |
| Mar 7 | 42°F | 20°F | 61°F 1987 | -13°F 2003 | 24% | 9% |
| Mar 8 | 43°F | 20°F | 62°F 1993 | -14°F 2022 | 24% | 8% |
| Mar 9 | 43°F | 21°F | 64°F 2005 | -10°F 2009 | 24% | 8% |
| Mar 10 | 43°F | 21°F | 64°F 1983 | -24°F 2009 | 24% | 8% |
| Mar 11 | 44°F | 21°F | 66°F 2005 | -18°F 2009 | 24% | 8% |
| Mar 12 | 44°F | 22°F | 66°F 1983 | -11°F 1967 | 24% | 7% |
| Mar 13 | 45°F | 22°F | 64°F 1992 | -13°F 1967 | 24% | 7% |
| Mar 14 | 45°F | 23°F | 67°F 2015 | -11°F 2020 | 24% | 7% |
| Mar 15 | 45°F | 23°F | 67°F 1992 | -13°F 2020 | 25% | 7% |
| Mar 16 | 46°F | 23°F | 71°F 1994 | -12°F 2020 | 25% | 7% |
| Mar 17 | 46°F | 24°F | 67°F 2007 | -6°F 1965 | 25% | 7% |
| Mar 18 | 46°F | 24°F | 65°F 2004 | -14°F 1965 | 25% | 7% |
| Mar 19 | 47°F | 24°F | 63°F 1999 | -15°F 1965 | 25% | 7% |
| Mar 20 | 47°F | 25°F | 67°F 2015 | -7°F 1965 | 25% | 6% |
| Mar 21 | 47°F | 25°F | 66°F 2016 | -1°F 1981 | 26% | 6% |
| Mar 22 | 48°F | 25°F | 62°F 1972 | -2°F 1974 | 26% | 6% |
| Mar 23 | 48°F | 26°F | 68°F 2004 | -11°F 1965 | 26% | 6% |
| Mar 24 | 48°F | 26°F | 70°F 1993 | -18°F 1965 | 26% | 6% |
| Mar 25 | 48°F | 26°F | 67°F 1999 | -9°F 1965 | 26% | 6% |
| Mar 26 | 49°F | 26°F | 69°F 1999 | -8°F 1965 | 27% | 6% |
| Mar 27 | 49°F | 27°F | 72°F 2015 | -11°F 1965 | 27% | 6% |
| Mar 28 | 49°F | 27°F | 69°F 2022 | -8°F 1965 | 27% | 6% |
| Mar 29 | 49°F | 27°F | 73°F 1978 | -3°F 1987 | 27% | 5% |
| Mar 30 | 50°F | 27°F | 75°F 2004 | 3°F 2018 | 27% | 5% |
| Mar 31 | 50°F | 27°F | 69°F 2015 | -4°F 2018 | 28% | 5% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- March 1
- sunrise 7:09 AM, sunset 6:15 PM
- March 31
- sunrise 7:10 AM, sunset 7:58 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00247159 (Rogers Pass 9 Nne), public domain. Records: NOAA GHCN-Daily, station USC00247159, 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.