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United States / Utah / ZIP area

A garden in
Salt Lake City.

Get to know the seasonal picture around your postal area, then explore the crops you want to grow.

Salt Lake City, UT 84138

Choose a crop
Garden tomatoes
Postal area84138
RegionUtah
Climate reference1991–2020

Your seasonal context

Understand the place before the date.

How local is this information?

Postal precision
Representative postal coordinates · not your garden address
Climate reference
NOAA · 1991–2020 · 1.2 km from the postal reference point
Planting dates
General crop stages · choose a locally advised date
Source review
September 28, 2026 · source data period is separate

Distance alone does not establish a climate match. Elevation, coastal exposure, urban shelter and soil can differ; the postal location has no verified garden elevation. Station and NASA monthly means differ by at least 3°C in one month. Their periods and spatial coverage differ; use the station as a reference and check your actual site.

Your postal reference & climate station

Approximate postal reference for 84138 and the NOAA climate station SALT LAKE TRIAD CTR, UT US, 1.2 km away. This map does not show postal boundaries.
Approximate postal referenceClimate station referenceNOAA · SALT LAKE TRIAD CTR, UT US · 1.2 km straight-line distance · 1991–2020. The line links two reference points, not a route or a climate boundary. No postal boundaries or street-level detail are shown. View larger map · Map geography: Natural Earth; postal references: GeoNames.

The postal reference point is near 40.761°, -111.891°. At the nearest qualifying NOAA station reference (SALT LAKE TRIAD CTR, UT US), July is the warmest month on average (27.0°C), while January is the coolest (0.9°C). This does not measure your garden’s temperature.

No reference monthly mean is below freezing. Individual cold nights can still occur; this does not establish a frost-free season. Check local crop advice alongside this seasonal context. A monthly average cannot identify a safe planting day.

Light at your latitude

At 40.761° N, the length of the day changes independently of temperature. Compare the middle of three seasons when planning your garden.

March 1511.7 hours
June 1514.9 hours
December 159.1 hours

Geometric daylight estimate from latitude and solar declination, rounded to 0.1 hour. This is time above a flat horizon, excluding atmospheric refraction, hills, buildings and cloud cover. It is not the direct-sun exposure of your bed. About solar-position calculations.

NOAA station normals · SALT LAKE TRIAD CTR, UT US · 1991–2020
MonthMean air temperatureMonthly precipitation total
January0.9°C (34°F)39.1 mm
February3.7°C (39°F)36.8 mm
March8.5°C (47°F)51.8 mm
April11.7°C (53°F)64.5 mm
May16.7°C (62°F)53.1 mm
June22.0°C (72°F)26.9 mm
July27.0°C (81°F)14.0 mm
August26.0°C (79°F)15.5 mm
September20.6°C (69°F)33.0 mm
October13.5°C (56°F)35.3 mm
November6.8°C (44°F)40.6 mm
December1.3°C (34°F)39.4 mm

Historical station normals are not current weather or a last-frost prediction. Station elevation: 1305 m. Temperature coverage code: R; minimum contributing years across months: 11. Precipitation coverage code: R. Monthly totals are not daily rainfall or a watering schedule. NOAA normals can include adjustments and filled gaps; S means standard coverage and R means representative coverage. Open official station data.

Compare NASA regional grid context · 2001–2020
Historical monthly climate near 84138 · 2001–2020
MonthMean air temperatureMean precipitation / day
January-4.5°C (24°F)1.77 mm
February-2.4°C (28°F)1.59 mm
March2.7°C (37°F)1.75 mm
April6.3°C (43°F)2.19 mm
May11.9°C (53°F)1.87 mm
June18.1°C (65°F)1.00 mm
July23.7°C (75°F)0.53 mm
August22.3°C (72°F)0.78 mm
September16.7°C (62°F)1.26 mm
October8.7°C (48°F)1.47 mm
November1.9°C (35°F)1.54 mm
December-4.3°C (24°F)2.08 mm

NASA POWER regional grid, 0.5° latitude × 0.625° longitude. Grid center 41.000°, -111.875°. Monthly mean air temperature is neither a nightly low nor soil temperature. Rainfall averages do not set a watering schedule. Open the climate source.

Compare nearby places

Six nearby postal areas

Explore the closest listed postal areas by straight-line distance between their representative coordinates. A nearby garden may still have different soil, shelter or elevation.

Nearby areas · historical January and July mean air temperature
Postal areaDistanceJanJul
Salt Lake City84138 · this area—-4.5°C23.7°C
Salt Lake CityUT 841390.0 km-4.5°C23.7°C
Salt Lake CityUT 841470.0 km-4.5°C23.7°C
Salt Lake CityUT 841520.0 km-4.5°C23.7°C
Salt Lake CityUT 841890.0 km-4.5°C23.7°C
Salt Lake CityUT 841010.7 km-4.5°C23.7°C
Salt Lake CityUT 841360.9 km-4.5°C23.7°C

Distances use GeoNames representative postal coordinates, which may be estimated; they are not driving distances. Nearby areas often share one NASA POWER grid cell, so identical climate values are expected. Differences shown here describe the climate grids, not a measured difference between individual gardens.

Regional advice

Choose a local planting window.

Utah State University Extension

State Extension referral; ask for county-specific vegetable guidance.

Ask which dates refer to indoor seed starting, direct sowing or transplanting, and whether they cover spring or fall. This referral is not a verified postal-code planting calendar.

Find an official community climate station

What this postal area includes

Salt Lake City.

A ZIP area is a postal geography, not a neighborhood or municipal boundary. Place names may include multiple communities. The representative coordinates may be estimated. Nearby gardens can differ in elevation, shelter, slope and soil.

More for this garden

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