Sister Bay, WI weather in April
Sister Bay is chilly in April, with some rain and some snow: highs average 47°F and nights drop to about 30°F. There are about 10 days with rain or snow. Snowfall averages about 5.7 in.
- Normal high
- 47°F
- Normal low
- 30°F
- Wet days
- 10
- 2.9 in total
- Snowfall
- 5.7 in
- snow on the ground 3 days
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 42°F | 53°F |
| Normal low | 25°F | 35°F |
| Chance of a wet day | 29% | 34% |
| Sunrise / sunset | 6:28 am / 7:15 pm | 5:38 am / 7:52 pm |
| Daylight | 12.8 h | 14.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)1 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)0 of 30
- Hot dayshigh 90°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow10 of 30
- Notable rainat least 0.10 in7 of 30
- Freezing nightslow 32°F or below15 of 30
- Snow on the groundsnow depth 1 in or more3 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain and snow in April
Normal precipitation is 2.9 in; a dry April brings about 2.0 in and a wet one about 3.4 in (25th and 75th percentiles). About 2 days bring half an inch or more. Normal snowfall is 5.7 in, with about 2 days of an inch or more.
How April varies from year to year
- Warmest April, 1991-20202006: average high 54°F
- Coolest April2018: average high 41°F
- Wettest April2011: 5.0 in
- Driest April1997: 0.8 in
- Highest reading76°F (April 18, 2002)
- Lowest reading10°F (April 4, 1995)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 36°F | 47°F | 59°F |
| Normal low | 20°F | 30°F | 40°F |
| Wet days | 8 | 10 | 11 |
| Comfortable days | 0 | 1 | 8 |
| Daylight | 11.9 h | 13.5 h | 14.9 h |
Highs change by +11°F from March and +12°F into May.
Nearby alternatives in April
- Warmer: Green Bay, WI64 mi · high 54°F · 12 wet days
How Sister Bay ranks in April
- Normal high371st warmest of 378 cities; 5th of 5 in Wisconsin
- Wet days217th driest of 378
What to pack for Sister Bay in April
- A warm jacket – lows near 30°F, highs near 47°F
- A rain jacket or umbrella – rain or snow on about 10 days
- Waterproof boots – about 5.7 in of snow in a typical year
- A hat and gloves – about 15 freezing nights
Heating and cooling
April has 792 heating degree days and 0 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How cold is Sister Bay in April?
The normal high is 47°F and the normal low is 30°F. From 1991 to 2020 the coldest April reading was 10°F (April 4, 1995).
Does it rain a lot in Sister Bay in April?
About 10 days in April have at least 0.01 in of precipitation, and the normal total is 2.9 in. The wettest April in 1991-2020 was in 2011 (5.0 in); the driest was in 1997 (0.8 in).
Does it snow in Sister Bay in April?
Yes. Normal snowfall in April is 5.7 in, and snow covers the ground on about 3 days.
Is April a good time to visit Sister Bay?
April ranks 7th of 12 months on our comfort score for Sister Bay (47 out of 100). It has about 1 comfortable day (judged by temperature only). The best months are June, July and August.
Where the numbers come from
- Temperature, rain and snowfall: Washington Is (USC00478905), 16 mi NE of the city center, 686 ft (73 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snow depth: Sturgeon Bay Exp Farm (USC00478267), 24 mi SSW of the city center, 699 ft (86 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Ephraim 1NE-Wwtp (USC00472626), 2.0 mi SW of the city center, 733 ft (120 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).