Weather in Plain City, Utah
High country wildflowers peak. Day 58 of spring. Read this microseason across nine climate regions →
- TodayMay 16Overcast—70°47°
- SundayMay 17Overcast14%54°46°
- MondayMay 18Light Drizzle69%51°42°
- TuesdayMay 19Overcast—61°37°
- WednesdayMay 20Overcast—70°45°
- ThursdayMay 21Overcast—70°47°
- FridayMay 22Overcast—76°50°
- PM 2.5
- 3.3 μg/m³
- PM 10
- 6.1 μg/m³
- NO₂
- 0.8 μg/m³
- Ozone
- 108.0 μg/m³
- UV Index
- 2.1 Low
Flowers blooming in late autumn, a sure sign of a bad winter coming.
- Moonrise
- 11:32 AM
- Moonset
- 1:59 AM
- In sign
- ♉︎ Taurus
High country wildflowers peak
Plain City at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: April 24 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Warm-season window is open
As of May 16, 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 | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Plain City's warmest month is July (~78°F mean) and its coldest is January (~30°F). Rainfall peaks in May (2.6 inches) and bottoms out in July (0.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 30° | 2.5″ | 7 |
| February | 34° | 1.9″ | 6 |
| March | 44° | 2.3″ | 5 |
| April | 50° | 2.5″ | 5 |
| May | 60° | 2.6″ | 6 |
| June | 70° | 1.5″ | 4 |
| July | 78° | 0.6″ | 2 |
| August | 77° | 0.7″ | 2 |
| September | 67° | 1.5″ | 3 |
| October | 54° | 2.1″ | 4 |
| November | 41° | 1.7″ | 4 |
| December | 31° | 1.8″ | 5 |
Regional context
Plain City sits within a cold semi-arid climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Salt Lake City, UT, Provo, UT, Ogden, UT, West Valley City, UT, Logan, UT.
Frequently asked
- When does it freeze in Plain City?
- Plain City's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Plain City?
- May is the wettest month with about 2.6 inches of rain on average; the city receives roughly 22 inches annually.
- What is the warmest month in Plain City?
- July is typically warmest, averaging about 78°F.
- What is the coldest month in Plain City?
- January is typically coldest, averaging about 30°F.
- When can I start a vegetable garden in Plain City?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Plain City get?
- Plain City averages about 51 rainy days per year.
- What hardiness zone is Plain City?
- Plain City'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
Plain City, Utah sits in a cold semi-arid climate zone. January means hover near 30°F while July averages 78°F — a 48°F seasonal swing.
Across the year, Plain City receives about 22 inches of precipitation spread over roughly 51 rainy days.
The rhythm of the year is set by latitude (41.3°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.