April weather in Lewistown, MT
The average temperature in Lewistown in April is 40.9°F (28.8°F–53.0°F). Average precipitation: 1.71 inches.
April is a spring month in Lewistown, and is cooler than the annual average of 43.1°F. Daily temperatures swing about 24.2°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 13h 22m. For travel, April is cool.
Avg High
53.0°F
Avg Low
28.8°F
Precipitation
1.71 in
Daylight
13h 22m
April records in Lewistown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 71.1°F (1991) | -11.9°F (1908) | 0.72 in (2025) |
| April 2 | 73.9°F (1921) | -17.0°F (1936) | 0.57 in (1925) |
| April 3 | 73.0°F (1992) | -7.8°F (2018) | 1.35 in (1955) |
| April 4 | 72.0°F (2016) | 8.1°F (1935) | 1.40 in (1955) |
| April 5 | 73.9°F (1969) | -8.0°F (1936) | 0.45 in (1921) |
| April 6 | 80.1°F (1930) | 1.0°F (1975) | 0.97 in (2024) |
| April 7 | 82.0°F (1930) | 6.1°F (1926) | 0.53 in (2013) |
| April 8 | 78.1°F (2022) | -5.1°F (1982) | 0.62 in (1975) |
| April 9 | 81.0°F (1910) | 3.0°F (1921) | 1.00 in (2017) |
| April 10 | 77.0°F (1898) | -0.9°F (1995) | 0.64 in (1996) |
| April 11 | 80.1°F (1925) | -11.0°F (1940) | 0.39 in (1991) |
| April 12 | 78.1°F (1976) | 0.0°F (1997) | 0.53 in (2012) |
| April 13 | 82.0°F (1908) | 1.9°F (1928) | 0.73 in (2010) |
| April 14 | 82.0°F (1915) | 0.0°F (1986) | 0.80 in (1896) |
| April 15 | 81.0°F (1913) | -11.0°F (1896) | 1.20 in (1896) |
| April 16 | 80.1°F (1926) | -9.0°F (1896) | 1.73 in (1927) |
| April 17 | 81.0°F (1923) | 3.9°F (1896) | 0.90 in (1903) |
| April 18 | 81.0°F (1936) | 5.0°F (1951) | 1.03 in (2005) |
| April 19 | 86.0°F (1910) | 3.0°F (1941) | 0.65 in (2007) |
| April 20 | 84.0°F (1908) | 0.0°F (1927) | 1.08 in (1973) |
| April 21 | 82.0°F (1906) | 0.0°F (2008) | 0.70 in (1904) |
| April 22 | 86.0°F (1906) | 1.0°F (1967) | 0.91 in (2011) |
| April 23 | 82.9°F (2012) | 12.9°F (1931) | 4.50 in (1900) |
| April 24 | 84.0°F (1910) | 17.1°F (1958) | 1.38 in (1994) |
| April 25 | 82.9°F (1952) | 9.0°F (1960) | 0.84 in (1912) |
| April 26 | 86.0°F (1910) | 17.1°F (1929) | 0.80 in (1901) |
| April 27 | 82.0°F (1928) | 15.1°F (1994) | 0.88 in (2012) |
| April 28 | 86.0°F (1939) | 9.0°F (1907) | 0.82 in (1970) |
| April 29 | 89.1°F (1939) | 10.2°F (2019) | 0.70 in (2022) |
| April 30 | 82.9°F (1926) | 5.0°F (1909) | 0.45 in (1951) |