Grace, Idaho Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Grace weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——74°54°—
- FridayJun 5Overcast——80°51°+6°
- SaturdayJun 6Overcast——83°54°+3°
- SundayJun 7Drizzle16%0.06″63°44°-20°
- MondayJun 8Overcast——77°42°+14°
- TuesdayJun 9Overcast18%—65°43°-12°
- WednesdayJun 10Light Drizzle31%—72°45°+7°
PM2.5 at 6.3 µg/m³ (AQI 35) with a 0.62 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 11 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 6.3 µg/m³ (AQI 35) with a 0.62 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.62
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:06 AM
- Moonset
- 3:24 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Grace at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: May 1 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Grace's warmest month is July (~68°F mean) and its coldest is January (~22°F). Rainfall peaks in May (2.4 inches) and bottoms out in July (0.8 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 22° | 1.1″ | 4 |
| February | 25° | 1.0″ | 4 |
| March | 34° | 1.3″ | 4 |
| April | 42° | 1.4″ | 5 |
| May | 51° | 2.4″ | 6 |
| June | 59° | 1.3″ | 4 |
| July | 68° | 0.8″ | 2 |
| August | 66° | 1.0″ | 3 |
| September | 57° | 1.4″ | 4 |
| October | 45° | 1.4″ | 4 |
| November | 33° | 0.9″ | 3 |
| December | 23° | 1.0″ | 4 |
Regional context
Grace's climate, per the NOAA NCEI 1991-2020 normals from the nearest reporting station, runs cold-winter and warm-summer. January means hover near 22°F while July climbs to 68°F — a 46°F seasonal swing typical of northern-tier latitudes. Annual precipitation totals about 15.1 inches spread across roughly 47 days with measurable rain or snow.
Rainfall stays relatively even across the calendar: May tops out at 2.4 inches across 6.3 days with measurable rain, and July settles around 0.8 inches across 2.4 rainy days — a comparatively narrow seasonal range. That even-rainfall rhythm puts Grace alongside places like Soda Springs, ID, Bancroft, ID and Lava Hot Springs, ID — places without a single dominant storm season, where moisture arrives steadily across the calendar.
The frost-sensitive growing window opens around late-May, when overnight lows reliably clear freezing for cool-season crops like kale, peas, spinach, and parsnips. Heat-loving transplants like tomatoes, peppers, and squash generally hold off for another 10-14 days to clear the last spring frost risk window. The window closes around early-October, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. These are 30-year central tendencies; year-to-year frost dates can move by up to two weeks. Local features matter: a south-facing slope inside Grace typically runs 3-5 days ahead of the regional last-frost date, while a low-lying lot along a creek or drainage can lag the same date by a week or more on calm clear nights.
Similar climates: Soda Springs, ID, Bancroft, ID, Lava Hot Springs, ID, Georgetown, ID, Downey, ID.
Frequently asked
- When does it freeze in Grace?
- Grace's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Grace?
- May is the wettest month with about 2.4 inches of rain on average; the city receives roughly 15 inches annually.
- What is the warmest month in Grace?
- July is typically warmest, averaging about 68°F.
- What is the coldest month in Grace?
- January is typically coldest, averaging about 22°F.
- When can I start a vegetable garden in Grace?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Grace get?
- Grace averages about 47 rainy days per year.
- What hardiness zone is Grace?
- Grace's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Grace, Idaho sits in a cold semi-arid climate zone. January means hover near 22°F while July averages 68°F — a 46°F seasonal swing.
Across the year, Grace receives about 15 inches of precipitation spread over roughly 47 rainy days.
The rhythm of the year is set by latitude (42.6°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.