Lewis and Clark County climate

Lewis and Clark County Weather in March

NOAA 1991-2020 normals for Rogers Pass 9 Nne, 10.7 km from Lewis and Clark County

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 daily high and low temperature at Lewis and Clark County, in °F, with the record for each date.-50-250255075100151015202530
  • 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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Mar 140°F18°F64°F 1992-20°F 201425%10%
Mar 240°F18°F65°F 1968-37°F 201924%10%
Mar 341°F19°F60°F 1968-40°F 201924%10%
Mar 441°F19°F66°F 1987-40°F 201924%10%
Mar 541°F19°F65°F 1987-18°F 201924%9%
Mar 642°F20°F64°F 2020-6°F 200324%9%
Mar 742°F20°F61°F 1987-13°F 200324%9%
Mar 843°F20°F62°F 1993-14°F 202224%8%
Mar 943°F21°F64°F 2005-10°F 200924%8%
Mar 1043°F21°F64°F 1983-24°F 200924%8%
Mar 1144°F21°F66°F 2005-18°F 200924%8%
Mar 1244°F22°F66°F 1983-11°F 196724%7%
Mar 1345°F22°F64°F 1992-13°F 196724%7%
Mar 1445°F23°F67°F 2015-11°F 202024%7%
Mar 1545°F23°F67°F 1992-13°F 202025%7%
Mar 1646°F23°F71°F 1994-12°F 202025%7%
Mar 1746°F24°F67°F 2007-6°F 196525%7%
Mar 1846°F24°F65°F 2004-14°F 196525%7%
Mar 1947°F24°F63°F 1999-15°F 196525%7%
Mar 2047°F25°F67°F 2015-7°F 196525%6%
Mar 2147°F25°F66°F 2016-1°F 198126%6%
Mar 2248°F25°F62°F 1972-2°F 197426%6%
Mar 2348°F26°F68°F 2004-11°F 196526%6%
Mar 2448°F26°F70°F 1993-18°F 196526%6%
Mar 2548°F26°F67°F 1999-9°F 196526%6%
Mar 2649°F26°F69°F 1999-8°F 196527%6%
Mar 2749°F27°F72°F 2015-11°F 196527%6%
Mar 2849°F27°F69°F 2022-8°F 196527%6%
Mar 2949°F27°F73°F 1978-3°F 198727%5%
Mar 3050°F27°F75°F 20043°F 201827%5%
Mar 3150°F27°F69°F 2015-4°F 201828%5%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lewis and Clark County, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • 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

Every day of March: sun and moon

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.