Portland weather in April: Portland, Maine: normal highs, lows, rain and records for April
Portland in April has a normal high of 54°F and a normal low of 35°F, a daily mean of 45°F, rising from 48°F on the 1st to 60°F by the 30th. Measurable precipitation falls on 11 days in a normal April, 4.41 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of 2°C, 112 mm of precipitation and 7 cm of snow in April.
- NOAA stationPortland International Jetport
- Station IDUSW00014764
- Location43.65°N 70.30°W
- Elevation45 ft (14 m)
- From the center6 miles
- Population69,568
- Jan 32° 16°
- Feb 35° 17°
- Mar 42° 26°
- Apr 54° 35°
- May 64° 46°
- Jun 74° 55°
- Jul 80° 61°
- Aug 79° 60°
- Sep 71° 52°
- Oct 60° 41°
- Nov 48° 32°
- Dec 38° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Portland in April?
The normal high is 54°F and the normal low 35°F, for a daily mean of 44.6°F. April is 10.5°F warmer than March and 10.3°F cooler than May. April is the 7th warmest month of the year in Portland and the 3rd wettest. Across the month the normal high rises 12°F, from 48°F on April 1 to 60°F on April 30. From one year to the next April's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 43°F and 47°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 48°F | 31°F | 37% | 23% |
| April 8 | 51°F | 33°F | 37% | 23% |
| April 15 | 54°F | 35°F | 37% | 23% |
| April 22 | 57°F | 38°F | 38% | 24% |
| April 30 | 60°F | 40°F | 39% | 24% |
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 | 48°F | 31°F | 37% | 23% | 12 h 40 min |
| April 2 | 48°F | 31°F | 37% | 23% | 12 h 40 min |
| April 3 | 49°F | 31°F | 37% | 23% | 12 h 50 min |
| April 4 | 49°F | 32°F | 37% | 23% | 12 h 50 min |
| April 5 | 49°F | 32°F | 37% | 23% | 12 h 50 min |
| April 6 | 50°F | 32°F | 37% | 23% | 13 h |
| April 7 | 50°F | 33°F | 37% | 23% | 13 h |
| April 8 | 51°F | 33°F | 37% | 23% | 13 h |
| April 9 | 51°F | 33°F | 37% | 23% | 13 h 10 min |
| April 10 | 52°F | 34°F | 37% | 23% | 13 h 10 min |
| April 11 | 52°F | 34°F | 37% | 23% | 13 h 10 min |
| April 12 | 52°F | 34°F | 37% | 23% | 13 h 10 min |
| April 13 | 53°F | 35°F | 37% | 23% | 13 h 20 min |
| April 14 | 53°F | 35°F | 37% | 23% | 13 h 20 min |
| April 15 | 54°F | 35°F | 37% | 23% | 13 h 20 min |
| April 16 | 54°F | 36°F | 37% | 23% | 13 h 30 min |
| April 17 | 55°F | 36°F | 38% | 24% | 13 h 30 min |
| April 18 | 55°F | 36°F | 38% | 24% | 13 h 30 min |
| April 19 | 55°F | 37°F | 38% | 24% | 13 h 30 min |
| April 20 | 56°F | 37°F | 38% | 24% | 13 h 40 min |
| April 21 | 56°F | 37°F | 38% | 24% | 13 h 40 min |
| April 22 | 57°F | 38°F | 38% | 24% | 13 h 40 min |
| April 23 | 57°F | 38°F | 38% | 24% | 13 h 50 min |
| April 24 | 57°F | 38°F | 38% | 24% | 13 h 50 min |
| April 25 | 58°F | 39°F | 39% | 24% | 13 h 50 min |
| April 26 | 58°F | 39°F | 39% | 24% | 13 h 50 min |
| April 27 | 59°F | 39°F | 39% | 24% | 14 h |
| April 28 | 59°F | 40°F | 39% | 24% | 14 h |
| April 29 | 59°F | 40°F | 39% | 24% | 14 h |
| April 30 | 60°F | 40°F | 39% | 24% | 14 h |
- Normal high
- 54°FApril average
- Normal low
- 35°FApril average
- Precipitation
- 4.41 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 2.8 inmonth total
- Nights at 32°F or colder
- 12
- Daylight
- 12 h 40 min to 14 hApril 1 to April 30
- Days at 70°F or more
- 2
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014764; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Portland in April?
On a given April day the chance of 0.01 inch or more is 38% on average, highest around April 30 (39%). In all, 4.41 in falls on 11 days of a normal April, 1 of them with an inch or more.
In a normal April in Portland, 12 nights fall to freezing and snowfall averages 2.8 inches.
Snow falls on 1 day in a normal April, and an inch or more covers the ground on 2 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014764.
How humid and windy is Portland in April?
At 3 p.m. the normal temperature is 55°F with 51% relative humidity and a dew point of 37°F; at 6 a.m. it is 44°F with 77% humidity. The wind averages 8.5 mph, most often from the south in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 44°F | 37°F | 77% | 6.1 mph | – |
| 9 a.m. | 52°F | 38°F | 57% | 9.7 mph | – |
| noon | 56°F | 38°F | 51% | 12.0 mph | – |
| 3 p.m. | 55°F | 37°F | 51% | 12.5 mph | – |
| 6 p.m. | 52°F | 37°F | 58% | 10.1 mph | – |
| 9 p.m. | 48°F | 38°F | 68% | 6.6 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014764. 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 Portland?
The warmest April temperature on Portland's official record (since 1874) is 92°F, on April 28, 2009; the coldest is 8°F, on April 4, 1954. The wettest April brought 9.90 in (1973); the snowiest, 20.5 inches (1906).
The April mean against the 1991-2020 normal of 44.6°F: 2021 45.7°F (+1.1), 2022 44.9°F (+0.3), 2023 45.1°F (+0.5), 2024 44.1°F (−0.5), 2025 45.2°F (+0.6), 2026 43.7°F (−0.9). 4 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.7°F | +1.1°F | 3.45 in |
| 2022 | 44.9°F | +0.3°F | 5.00 in |
| 2023 | 45.1°F | +0.5°F | 5.49 in |
| 2024 | 44.1°F | −0.5°F | 3.14 in |
| 2025 | 45.2°F | +0.6°F | 4.59 in |
| 2026 | 43.7°F | −0.9°F | 3.09 in |
Source: records: ACIS, NWS threaded record PWMthr; recent months: ACIS, station USW00014764. Records and recent months use complete months only.
How does April in Portland compare across Maine?
Across the 42 places PlainClimate covers in Maine, April normal highs run from 46°F in Fort Kent to 57°F in Sanford; Portland's is 54°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.