Green Bay weather in April: Green Bay, Wisconsin: normal highs, lows, rain and records for April
Green Bay in April has a normal high of 54°F and a normal low of 35°F, a daily mean of 44°F, rising from 47°F on the 1st to 61°F by the 30th. Measurable precipitation falls on 12 days in a normal April, 3.00 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of 2°C, 76 mm of precipitation and 12 cm of snow in April.
- NOAA stationGreen Bay A S International Airport
- Station IDUSW00014898
- Location44.50°N 88.11°W
- Elevation682 ft (208 m)
- From the center6 miles
- Population106,311
- Jan 26° 11°
- Feb 29° 13°
- Mar 40° 24°
- Apr 54° 35°
- May 67° 46°
- Jun 77° 56°
- Jul 81° 60°
- Aug 79° 58°
- Sep 72° 50°
- Oct 58° 40°
- Nov 44° 29°
- Dec 31° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Green Bay in April?
The normal high is 54°F and the normal low 35°F, for a daily mean of 44.3°F. April is 12.2°F warmer than March and 12.2°F cooler than May. April is the 7th warmest month of the year in Green Bay and the 6th wettest. Across the month the normal high rises 14°F, from 47°F on April 1 to 61°F on April 30. From one year to the next April's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 41°F and 48°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 | 47°F | 30°F | 36% | 20% |
| April 8 | 50°F | 32°F | 37% | 21% |
| April 15 | 54°F | 35°F | 38% | 22% |
| April 22 | 57°F | 37°F | 39% | 22% |
| April 30 | 61°F | 40°F | 39% | 23% |
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 | 47°F | 30°F | 36% | 20% | 12 h 40 min |
| April 2 | 48°F | 30°F | 36% | 20% | 12 h 50 min |
| April 3 | 48°F | 31°F | 36% | 20% | 12 h 50 min |
| April 4 | 49°F | 31°F | 37% | 20% | 12 h 50 min |
| April 5 | 49°F | 31°F | 37% | 21% | 13 h |
| April 6 | 49°F | 32°F | 37% | 21% | 13 h |
| April 7 | 50°F | 32°F | 37% | 21% | 13 h |
| April 8 | 50°F | 32°F | 37% | 21% | 13 h |
| April 9 | 51°F | 33°F | 37% | 21% | 13 h 10 min |
| April 10 | 51°F | 33°F | 38% | 21% | 13 h 10 min |
| April 11 | 52°F | 33°F | 38% | 22% | 13 h 10 min |
| April 12 | 52°F | 34°F | 38% | 22% | 13 h 20 min |
| April 13 | 53°F | 34°F | 38% | 22% | 13 h 20 min |
| April 14 | 53°F | 34°F | 38% | 22% | 13 h 20 min |
| April 15 | 54°F | 35°F | 38% | 22% | 13 h 30 min |
| April 16 | 54°F | 35°F | 38% | 22% | 13 h 30 min |
| April 17 | 54°F | 35°F | 38% | 22% | 13 h 30 min |
| April 18 | 55°F | 36°F | 39% | 22% | 13 h 30 min |
| April 19 | 55°F | 36°F | 39% | 22% | 13 h 40 min |
| April 20 | 56°F | 36°F | 39% | 22% | 13 h 40 min |
| April 21 | 56°F | 37°F | 39% | 22% | 13 h 40 min |
| April 22 | 57°F | 37°F | 39% | 22% | 13 h 50 min |
| April 23 | 57°F | 37°F | 39% | 22% | 13 h 50 min |
| April 24 | 58°F | 38°F | 39% | 22% | 13 h 50 min |
| April 25 | 58°F | 38°F | 39% | 23% | 13 h 50 min |
| April 26 | 59°F | 38°F | 39% | 23% | 14 h |
| April 27 | 59°F | 39°F | 39% | 23% | 14 h |
| April 28 | 60°F | 39°F | 39% | 23% | 14 h |
| April 29 | 60°F | 40°F | 39% | 23% | 14 h 10 min |
| April 30 | 61°F | 40°F | 39% | 23% | 14 h 10 min |
- Normal high
- 54°FApril average
- Normal low
- 35°FApril average
- Precipitation
- 3.00 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 4.7 inmonth total
- Nights at 32°F or colder
- 12
- Daylight
- 12 h 40 min to 14 h 10 minApril 1 to April 30
- Days at 70°F or more
- 3
- Days at 80°F or more
- 1
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014898; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Green Bay in April?
On a given April day the chance of 0.01 inch or more is 38% on average, highest around April 20 (39%). In all, 3.00 in falls on 12 days of a normal April, 1 of them with an inch or more.
In a normal April in Green Bay, 12 nights fall to freezing, 1 days stay below freezing all day and snowfall averages 4.7 inches.
Snow falls on 3 days 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 USW00014898.
How humid and windy is Green Bay in April?
At 3 p.m. the normal temperature is 59°F with 47% relative humidity and a dew point of 38°F; at 6 a.m. it is 44°F with 76% humidity. The wind averages 9.9 mph, most often from the east 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 | 76% | 8.1 mph | 49% |
| 9 a.m. | 51°F | 38°F | 60% | 11.4 mph | 52% |
| noon | 57°F | 39°F | 51% | 12.5 mph | 52% |
| 3 p.m. | 59°F | 38°F | 47% | 12.8 mph | 51% |
| 6 p.m. | 55°F | 38°F | 53% | 11.1 mph | 52% |
| 9 p.m. | 49°F | 38°F | 66% | 8.4 mph | 53% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014898. 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 Green Bay?
The warmest April temperature on Green Bay's official record (since 1886) is 89°F, on April 22, 1980; the coldest is 7°F, on April 3, 1954. The wettest April brought 8.56 in (2026); the snowiest, 36.7 inches (2018).
The April mean against the 1991-2020 normal of 44.3°F: 2021 47.2°F (+2.9), 2022 42.0°F (−2.3), 2023 46.0°F (+1.7), 2024 48.0°F (+3.7), 2025 45.8°F (+1.5), 2026 46.3°F (+2.0). 5 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 47.2°F | +2.9°F | 1.69 in |
| 2022 | 42.0°F | −2.3°F | 3.10 in |
| 2023 | 46.0°F | +1.7°F | 2.81 in |
| 2024 | 48.0°F | +3.7°F | 3.73 in |
| 2025 | 45.8°F | +1.5°F | 3.01 in |
| 2026 | 46.3°F | +2.0°F | 8.56 in |
Source: records: ACIS, NWS threaded record GRBthr; recent months: ACIS, station USW00014898. Records and recent months use complete months only.
How does April in Green Bay compare across Wisconsin?
Across the 165 places PlainClimate covers in Wisconsin, April normal highs run from 46°F in Superior to 61°F in Boscobel; Green Bay's is 54°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.