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Grand Island, Nebraska climate
Dfa Hot-summer humid continental
Grand Island has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 31°C, while the coldest is January averaging around −9°C at night. Precipitation totals about 676 mm a year and is strongly seasonal — May alone averages 119 mm while January barely receives 15 mm. Winters bring significant snowfall (70 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsGrand Island climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 5 | 11 | 17 | 23 | 29 | 31 | 30 | 26 | 19 | 11 | 4 |
| Avg temp (°C) | −3 | −1 | 5 | 11 | 17 | 23 | 25 | 24 | 19 | 12 | 4 | −2 |
| Avg low (°C) | −9 | −7 | −2 | 4 | 10 | 16 | 19 | 18 | 12 | 5 | −2 | −7 |
| Precipitation (mm) | 15 | 19 | 35 | 64 | 119 | 102 | 89 | 81 | 51 | 51 | 28 | 21 |
| Snowfall (cm) | 17 | 19 | 10 | 4 | — | — | — | — | 0 | 3 | 6 | 12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 5 | 11 | 17 | 23 | 29 |
| Avg temp (°C) | −3 | −1 | 5 | 11 | 17 | 23 |
| Avg low (°C) | −9 | −7 | −2 | 4 | 10 | 16 |
| Precipitation (mm) | 15 | 19 | 35 | 64 | 119 | 102 |
| Snowfall (cm) | 17 | 19 | 10 | 4 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 30 | 26 | 19 | 11 | 4 |
| Avg temp (°C) | 25 | 24 | 19 | 12 | 4 | −2 |
| Avg low (°C) | 19 | 18 | 12 | 5 | −2 | −7 |
| Precipitation (mm) | 89 | 81 | 51 | 51 | 28 | 21 |
| Snowfall (cm) | — | — | 0 | 3 | 6 | 12 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 6 | 7 | 9 | 12 | 10 | 9 | 9 | 7 | 6 | 5 | 5 |
| Days with high ≥ 32°C (days) | — | — | 0.0 | 0.3 | 2 | 8 | 13 | 8 | 4 | 0.5 | — | — |
| Days with low ≤ 0°C (days) | 30 | 26 | 22 | 8 | 0.5 | — | — | — | 0.2 | 6 | 22 | 30 |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 1 | 0.5 | — | — | — | — | 0.0 | 0.2 | 0.7 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 6 | 7 | 9 | 12 | 10 |
| Days with high ≥ 32°C (days) | — | — | 0.0 | 0.3 | 2 | 8 |
| Days with low ≤ 0°C (days) | 30 | 26 | 22 | 8 | 0.5 | — |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 1 | 0.5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 9 | 7 | 6 | 5 | 5 |
| Days with high ≥ 32°C (days) | 13 | 8 | 4 | 0.5 | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.2 | 6 | 22 | 30 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | 0.0 | 0.2 | 0.7 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 64 | 61 | 61 | 62 | 53 | 49 | 48 | 45 | 51 | 55 | 57 |
| Clear days (≤ 30% cloud) | 6 | 4 | 6 | 6 | 6 | 8 | 9 | 10 | 12 | 10 | 8 | 7 |
| Partly cloudy days (30–70%) | 11 | 11 | 10 | 11 | 11 | 13 | 14 | 13 | 10 | 10 | 11 | 12 |
| Cloudy days (≥ 70%) | 14 | 14 | 15 | 14 | 14 | 10 | 8 | 9 | 8 | 11 | 11 | 12 |
| Relative humidity (%) | 76 | 71 | 66 | 63 | 65 | 66 | 63 | 65 | 61 | 64 | 70 | 76 |
| Wind speed (m/s) | 3.6 | 3.8 | 4.0 | 4.3 | 3.7 | 3.3 | 2.8 | 2.7 | 3.3 | 3.5 | 3.5 | 3.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 64 | 61 | 61 | 62 | 53 |
| Clear days (≤ 30% cloud) | 6 | 4 | 6 | 6 | 6 | 8 |
| Partly cloudy days (30–70%) | 11 | 11 | 10 | 11 | 11 | 13 |
| Cloudy days (≥ 70%) | 14 | 14 | 15 | 14 | 14 | 10 |
| Relative humidity (%) | 76 | 71 | 66 | 63 | 65 | 66 |
| Wind speed (m/s) | 3.6 | 3.8 | 4.0 | 4.3 | 3.7 | 3.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 48 | 45 | 51 | 55 | 57 |
| Clear days (≤ 30% cloud) | 9 | 10 | 12 | 10 | 8 | 7 |
| Partly cloudy days (30–70%) | 14 | 13 | 10 | 10 | 11 | 12 |
| Cloudy days (≥ 70%) | 8 | 9 | 8 | 11 | 11 | 12 |
| Relative humidity (%) | 63 | 65 | 61 | 64 | 70 | 76 |
| Wind speed (m/s) | 2.8 | 2.7 | 3.3 | 3.5 | 3.5 | 3.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Grand IS Cntrl NE Rgnl AP (NOAA GHCN station USW00014935), about 5 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.