Grand Island weather in May: Grand Island, Nebraska: normal highs, lows, rain and records for May
Grand Island in May has a normal high of 73°F and a normal low of 51°F, a daily mean of 62°F, rising from 68°F on the 1st to 80°F by the 31st. Measurable precipitation falls on 12 days in a normal May, 4.70 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 10°C, 119 mm of precipitation in May.
- NOAA stationGrand Island Central NE Regional Airport
- Station IDUSW00014935
- Location40.96°N 98.31°W
- Elevation1,840 ft (561 m)
- Population53,250
- Jan 36° 16°
- Feb 40° 19°
- Mar 53° 29°
- Apr 63° 39°
- May 73° 51°
- Jun 84° 61°
- Jul 88° 66°
- Aug 86° 64°
- Sep 79° 54°
- Oct 66° 41°
- Nov 51° 28°
- Dec 39° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Grand Island in May?
The normal high is 73°F and the normal low 51°F, for a daily mean of 62.0°F. May is 11.0°F warmer than April and 10.8°F cooler than June. May is the 5th warmest month of the year in Grand Island and the wettest. Across the month the normal high rises 12°F, from 68°F on May 1 to 80°F on May 31. From one year to the next May's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Mays in three average between 59°F and 65°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 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 68°F | 44°F | 34% | 20% |
| May 8 | 70°F | 47°F | 36% | 21% |
| May 15 | 73°F | 50°F | 36% | 22% |
| May 22 | 76°F | 53°F | 37% | 23% |
| May 31 | 80°F | 57°F | 37% | 24% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 68°F | 44°F | 34% | 20% | 14 h |
| May 2 | 68°F | 45°F | 34% | 20% | 14 h |
| May 3 | 68°F | 45°F | 35% | 20% | 14 h |
| May 4 | 69°F | 45°F | 35% | 21% | 14 h |
| May 5 | 69°F | 46°F | 35% | 21% | 14 h |
| May 6 | 69°F | 46°F | 35% | 21% | 14 h 10 min |
| May 7 | 70°F | 47°F | 35% | 21% | 14 h 10 min |
| May 8 | 70°F | 47°F | 36% | 21% | 14 h 10 min |
| May 9 | 71°F | 48°F | 36% | 22% | 14 h 10 min |
| May 10 | 71°F | 48°F | 36% | 22% | 14 h 20 min |
| May 11 | 71°F | 48°F | 36% | 22% | 14 h 20 min |
| May 12 | 72°F | 49°F | 36% | 22% | 14 h 20 min |
| May 13 | 72°F | 49°F | 36% | 22% | 14 h 20 min |
| May 14 | 73°F | 50°F | 36% | 22% | 14 h 20 min |
| May 15 | 73°F | 50°F | 36% | 22% | 14 h 30 min |
| May 16 | 73°F | 51°F | 36% | 23% | 14 h 30 min |
| May 17 | 74°F | 51°F | 36% | 23% | 14 h 30 min |
| May 18 | 74°F | 51°F | 37% | 23% | 14 h 30 min |
| May 19 | 75°F | 52°F | 37% | 23% | 14 h 30 min |
| May 20 | 75°F | 52°F | 37% | 23% | 14 h 40 min |
| May 21 | 75°F | 53°F | 37% | 23% | 14 h 40 min |
| May 22 | 76°F | 53°F | 37% | 23% | 14 h 40 min |
| May 23 | 76°F | 54°F | 37% | 24% | 14 h 40 min |
| May 24 | 77°F | 54°F | 37% | 24% | 14 h 40 min |
| May 25 | 77°F | 54°F | 37% | 24% | 14 h 40 min |
| May 26 | 78°F | 55°F | 37% | 24% | 14 h 50 min |
| May 27 | 78°F | 55°F | 37% | 24% | 14 h 50 min |
| May 28 | 78°F | 56°F | 37% | 24% | 14 h 50 min |
| May 29 | 79°F | 56°F | 37% | 24% | 14 h 50 min |
| May 30 | 79°F | 56°F | 37% | 24% | 14 h 50 min |
| May 31 | 80°F | 57°F | 37% | 24% | 14 h 50 min |
- Normal high
- 73°FMay average
- Normal low
- 51°FMay average
- Precipitation
- 4.70 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 2
- Nights at 32°F or colder
- 1
- Daylight
- 14 h to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 20
- Days at 80°F or more
- 9
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014935; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Grand Island in May?
On a given May day the chance of 0.01 inch or more is 36% on average, highest around May 27 (37%). In all, 4.70 in falls on 12 days of a normal May, 1 of them with an inch or more.
In a normal May in Grand Island, 2 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014935.
How humid and windy is Grand Island in May?
At 3 p.m. the normal temperature is 76°F with 46% relative humidity and a dew point of 54°F; at 6 a.m. it is 58°F with 84% humidity. The wind averages 10.8 mph, most often from the south-southeast in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 58°F | 53°F | 84% | 8.7 mph | 56% |
| 9 a.m. | 66°F | 55°F | 66% | 11.7 mph | 61% |
| noon | 73°F | 54°F | 52% | 12.7 mph | 58% |
| 3 p.m. | 76°F | 54°F | 46% | 12.9 mph | 60% |
| 6 p.m. | 74°F | 54°F | 49% | 12.2 mph | 65% |
| 9 p.m. | 66°F | 55°F | 69% | 9.8 mph | 69% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014935. 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 May in Grand Island?
The warmest May temperature on Grand Island's official record (since 1895) is 104°F, on May 29, 1934; the coldest is 22°F, on May 1, 1909. The wettest May brought 11.27 in (1903); the snowiest, 4.5 inches (1947).
The May mean against the 1991-2020 normal of 62.0°F: 2021 61.4°F (−0.6), 2022 63.1°F (+1.1), 2023 65.5°F (+3.5), 2024 62.8°F (+0.8), 2025 61.1°F (−0.9), 2026 63.4°F (+1.4). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.4°F | −0.6°F | 2.89 in |
| 2022 | 63.1°F | +1.1°F | 2.45 in |
| 2023 | 65.5°F | +3.5°F | 1.78 in |
| 2024 | 62.8°F | +0.8°F | 7.18 in |
| 2025 | 61.1°F | −0.9°F | 3.14 in |
| 2026 | 63.4°F | +1.4°F | 4.20 in |
Source: records: ACIS, NWS threaded record GRIthr; recent months: ACIS, station USW00014935. Records and recent months use complete months only.
How does May in Grand Island compare across Nebraska?
Across the 137 places PlainClimate covers in Nebraska, May normal highs run from 64°F in Harrison to 76°F in Beaver City; Grand Island's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.