Lewistown weather in April: Lewistown, Montana: normal highs, lows, rain and records for April
Lewistown in April has a normal high of 53°F and a normal low of 29°F, a daily mean of 41°F, rising from 49°F on the 1st to 57°F by the 30th. Measurable precipitation falls on 12 days in a normal April, 1.71 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of −2°C, 43 mm of precipitation in April.
- NOAA stationLewistown Municipal Airport
- Station IDUSW00024036
- Location47.05°N 109.46°W
- Elevation4,145 ft (1,263 m)
- Population6,204
- Jan 34° 13°
- Feb 35° 14°
- Mar 44° 21°
- Apr 53° 29°
- May 63° 37°
- Jun 71° 45°
- Jul 82° 51°
- Aug 81° 50°
- Sep 70° 42°
- Oct 56° 31°
- Nov 43° 21°
- Dec 35° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lewistown in April?
The normal high is 53°F and the normal low 29°F, for a daily mean of 40.9°F. April is 8.0°F warmer than March and 9.1°F cooler than May. April is the 7th warmest month of the year in Lewistown and the 4th wettest. Across the month the normal high rises 8°F, from 49°F on April 1 to 57°F on April 30. From one year to the next April's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 38°F and 44°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 49°F | 26°F | 35% | 14% |
| April 8 | 51°F | 28°F | 36% | 16% |
| April 15 | 53°F | 29°F | 38% | 17% |
| April 22 | 55°F | 30°F | 39% | 18% |
| April 30 | 57°F | 32°F | 41% | 19% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 49°F | 26°F | 35% | 14% | 12 h 50 min |
| April 2 | 50°F | 26°F | 35% | 15% | 12 h 50 min |
| April 3 | 50°F | 27°F | 35% | 15% | 12 h 50 min |
| April 4 | 50°F | 27°F | 35% | 15% | 13 h |
| April 5 | 50°F | 27°F | 36% | 15% | 13 h |
| April 6 | 51°F | 27°F | 36% | 16% | 13 h |
| April 7 | 51°F | 27°F | 36% | 16% | 13 h 10 min |
| April 8 | 51°F | 28°F | 36% | 16% | 13 h 10 min |
| April 9 | 51°F | 28°F | 37% | 16% | 13 h 10 min |
| April 10 | 52°F | 28°F | 37% | 16% | 13 h 20 min |
| April 11 | 52°F | 28°F | 37% | 17% | 13 h 20 min |
| April 12 | 52°F | 28°F | 37% | 17% | 13 h 20 min |
| April 13 | 52°F | 28°F | 38% | 17% | 13 h 30 min |
| April 14 | 52°F | 28°F | 38% | 17% | 13 h 30 min |
| April 15 | 53°F | 29°F | 38% | 17% | 13 h 30 min |
| April 16 | 53°F | 29°F | 38% | 17% | 13 h 40 min |
| April 17 | 53°F | 29°F | 38% | 17% | 13 h 40 min |
| April 18 | 53°F | 29°F | 39% | 18% | 13 h 40 min |
| April 19 | 54°F | 29°F | 39% | 18% | 13 h 50 min |
| April 20 | 54°F | 30°F | 39% | 18% | 13 h 50 min |
| April 21 | 54°F | 30°F | 39% | 18% | 13 h 50 min |
| April 22 | 55°F | 30°F | 39% | 18% | 14 h |
| April 23 | 55°F | 30°F | 39% | 18% | 14 h |
| April 24 | 55°F | 30°F | 40% | 18% | 14 h |
| April 25 | 56°F | 31°F | 40% | 18% | 14 h |
| April 26 | 56°F | 31°F | 40% | 19% | 14 h 10 min |
| April 27 | 56°F | 31°F | 40% | 19% | 14 h 10 min |
| April 28 | 57°F | 31°F | 41% | 19% | 14 h 10 min |
| April 29 | 57°F | 32°F | 41% | 19% | 14 h 20 min |
| April 30 | 57°F | 32°F | 41% | 19% | 14 h 20 min |
- Normal high
- 53°FApril average
- Normal low
- 29°FApril average
- Precipitation
- 1.71 inmonth total
- Days with precipitation
- 120.01 inch or more
- Nights at 32°F or colder
- 21
- Daylight
- 12 h 50 min to 14 h 20 minApril 1 to April 30
- Days at 70°F or more
- 3
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024036; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lewistown in April?
On a given April day the chance of 0.01 inch or more is 38% on average, highest around April 30 (41%). In all, 1.71 in falls on 12 days of a normal April.
In a normal April in Lewistown, 21 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024036.
How humid and windy is Lewistown in April?
At 3 p.m. the normal temperature is 54°F with 38% relative humidity and a dew point of 29°F; at 6 a.m. it is 37°F with 73% humidity. The wind averages 9.8 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 37°F | 29°F | 73% | 8.2 mph | – |
| 9 a.m. | 47°F | 29°F | 50% | 10.4 mph | – |
| noon | 52°F | 29°F | 40% | 12.1 mph | – |
| 3 p.m. | 54°F | 29°F | 38% | 12.8 mph | – |
| 6 p.m. | 51°F | 30°F | 43% | 11.1 mph | – |
| 9 p.m. | 43°F | 31°F | 62% | 8.5 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024036. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for April in Lewistown?
The warmest April temperature on this station's record (since 1896) is 89°F, on April 29, 1939; the coldest is −17°F, on April 2, 1936. The wettest April brought 4.50 in (1900); the snowiest, 38.0 inches (1955).
The April mean against the 1991-2020 normal of 40.9°F: 2021 39.9°F (−1.0), 2022 34.6°F (−6.3), 2023 39.0°F (−1.9), 2024 42.4°F (+1.5), 2025 41.1°F (+0.2), 2026 41.1°F (+0.2). 3 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 39.9°F | −1.0°F | 1.04 in |
| 2022 | 34.6°F | −6.3°F | 2.09 in |
| 2023 | 39.0°F | −1.9°F | 2.60 in |
| 2024 | 42.4°F | +1.5°F | 2.55 in |
| 2025 | 41.1°F | +0.2°F | 1.19 in |
| 2026 | 41.1°F | +0.2°F | 1.58 in |
Source: records: ACIS, station USW00024036; recent months: ACIS, station USW00024036. Records and recent months use complete months only.
How does April in Lewistown compare across Montana?
Across the 141 places PlainClimate covers in Montana, April normal highs run from 43°F in Cooke City to 62°F in Hardin; Lewistown's is 53°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.