Climate averages 1991–2020
Meridian weather
in July.
A hot, very dry month: the warmest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Meridian: daytime highs average 32.7°C and nights cool to about 18.1°C. By daytime temperature it is the warmest month of the year.
Expect about 3.4 mm of rain on roughly 1 day, which makes July a very dry month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 15 h 05 min on an average July day.
The nearest other city in this atlas is Boise (15 km away). In July its highs average 32.7°C, about as warm as Meridian, with 2.6 mm of rain.
Among the 498 cities listed in the United States, Meridian ranks joint 103rd of 498 for the warmest July highs and joint 90th of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Meridian is 2.5°C warmer than that mean.
From July to August, average highs fall by 0.9°C to 31.8°C, and monthly rainfall stays at 3.4 mm.
The annual picture
July 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
Meridian climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.8°C-4.3°C | -4.3°C | 40 | 9.0 | 9.39 h |
| February | 7.0°C-2.5°C | -2.5°C | 26 | 7.4 | 10.510 h |
| March | 12.1°C0.8°C | 0.8°C | 31 | 8.6 | 11.912 h |
| April | 16.1°C3.8°C | 3.8°C | 28 | 6.4 | 13.413 h |
| May | 21.8°C8.6°C | 8.6°C | 29 | 5.9 | 14.715 h |
| June | 26.6°C13.1°C | 13.1°C | 16 | 3.4 | 15.415 h |
| July, selected | 32.7°C18.1°C | 18.1°C | 3.4 | 1.0 | 15.115 h |
| August | 31.8°C17.4°C | 17.4°C | 3.4 | 0.9 | 14.014 h |
| September | 26.1°C12.4°C | 12.4°C | 9.8 | 2.0 | 12.613 h |
| October | 17.6°C6.0°C | 6.0°C | 20 | 4.2 | 11.111 h |
| November | 9.3°C0.0°C | 0.0°C | 30 | 7.3 | 9.710 h |
| December | 3.6°C-3.8°C | -3.8°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
July in nearby cities
- Boise in JulyUnited States · 15 kmHigh 32.7°C · Low 17.9°C · 2.6 mm rain
- Nampa in JulyUnited States · 16 kmHigh 33.3°C · Low 19.2°C · 3.4 mm rain
- Kennewick in JulyUnited States · 361 kmHigh 34.1°C · Low 19.1°C · 3.8 mm rain
- Tri-Cities in JulyUnited States · 367 kmHigh 34.2°C · Low 19.2°C · 3.8 mm rain
- Bend in JulyUnited States · 398 kmHigh 27.7°C · Low 11.3°C · 14 mm rain
- Missoula in JulyUnited States · 408 kmHigh 28.8°C · Low 15.3°C · 19 mm rain
- Ogden in JulyUnited States · 449 kmHigh 31.4°C · Low 16.9°C · 9.3 mm rain
- Spokane Valley in JulyUnited States · 456 kmHigh 29.0°C · Low 15.3°C · 15 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 Meridian) is explained once on the Meridian year overview and on the Sources, method and limits page.
Nampa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.