Climate averages 1991–2020
Nampa weather
in June.
A warm, fairly dry month: the 3rd warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Nampa: daytime highs average 27.3°C and nights cool to about 14.2°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 16 mm of rain on roughly 3 days, which makes June a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 22 min on an average June day.
The nearest other city in this atlas is Meridian (16 km away). In June its highs average 26.6°C, 0.6°C cooler than Nampa, with 16 mm of rain.
Among the 498 cities listed in the United States, Nampa ranks joint 261st of 498 for the warmest June highs and joint 131st of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; Nampa is 0.6°C cooler than that mean.
From June to July, average highs rise by 6.0°C to 33.3°C, and monthly rainfall falls from 16 mm to 3.4 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Nampa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.6°C-3.4°C | -3.4°C | 40 | 9.0 | 9.39 h |
| February | 7.7°C-1.9°C | -1.9°C | 26 | 7.4 | 10.510 h |
| March | 12.8°C1.5°C | 1.5°C | 31 | 8.6 | 11.912 h |
| April | 16.8°C4.7°C | 4.7°C | 28 | 6.4 | 13.413 h |
| May | 22.4°C9.8°C | 9.8°C | 29 | 5.9 | 14.715 h |
| June, selected | 27.3°C14.2°C | 14.2°C | 16 | 3.4 | 15.415 h |
| July | 33.3°C19.2°C | 19.2°C | 3.4 | 1.0 | 15.115 h |
| August | 32.3°C18.3°C | 18.3°C | 3.4 | 0.9 | 14.014 h |
| September | 26.5°C13.4°C | 13.4°C | 9.8 | 2.0 | 12.613 h |
| October | 18.2°C6.9°C | 6.9°C | 20 | 4.2 | 11.111 h |
| November | 9.9°C0.9°C | 0.9°C | 30 | 7.3 | 9.710 h |
| December | 4.4°C-2.9°C | -2.9°C | 42 | 9.3 | 9.09 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Meridian in JuneUnited States · 16 kmHigh 26.6°C · Low 13.1°C · 16 mm rain
- Boise in JuneUnited States · 30 kmHigh 26.5°C · Low 13.0°C · 16 mm rain
- Kennewick in JuneUnited States · 360 kmHigh 28.8°C · Low 15.2°C · 13 mm rain
- Tri-Cities in JuneUnited States · 365 kmHigh 28.9°C · Low 15.3°C · 13 mm rain
- Bend in JuneUnited States · 386 kmHigh 21.4°C · Low 7.6°C · 26 mm rain
- Missoula in JuneUnited States · 422 kmHigh 22.2°C · Low 10.4°C · 56 mm rain
- Ogden in JuneUnited States · 457 kmHigh 25.8°C · Low 12.3°C · 29 mm rain
- Yakima in JuneUnited States · 460 kmHigh 25.6°C · Low 11.6°C · 9.5 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Nampa) is explained once on the Nampa year overview and on the Sources, method and limits page.
Meridian lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.