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United States / Alaska / ZIP area

A garden in
Anchorage.

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

Anchorage, AK 99509

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Garden tomatoes
Postal area99509
RegionAlaska
Climate reference2001–2020

Your seasonal context

Understand the place before the date.

The 99509 area uses a representative location near 61.218°, -149.900°. In the nearby historical climate grid, July is the warmest month on average (13.5°C), while January is the coolest (-8.3°C). September has the highest mean daily precipitation (3.94 mm).

Monthly mean temperatures are below freezing in January, February, March, November, December. Outdoor planting during those months needs a separate protected-growing assessment. Use these seasonal differences to frame your questions for a local gardening adviser.

Light at your latitude

At 61.218° N, the length of the day changes independently of temperature. Compare the middle of three seasons when planning your garden.

March 1511.3 hours
June 1518.9 hours
December 155.1 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.

Historical monthly climate near 99509 · 2001–2020
MonthMean air temperatureMean precipitation / day
January-8.3°C (17°F)1.71 mm
February-6.5°C (20°F)1.81 mm
March-5.6°C (22°F)1.26 mm
April0.4°C (33°F)1.27 mm
May6.5°C (44°F)1.52 mm
June11.1°C (52°F)1.97 mm
July13.5°C (56°F)2.69 mm
August12.7°C (55°F)3.55 mm
September8.3°C (47°F)3.94 mm
October2.0°C (36°F)2.82 mm
November-5.3°C (23°F)2.37 mm
December-7.0°C (19°F)2.07 mm

NASA POWER regional grid, 0.5° latitude × 0.625° longitude. Grid center 61.000°, -150.000°. 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
Anchorage99509 · this area—-8.3°C13.5°C
AnchorageAK 995140.0 km-8.3°C13.5°C
AnchorageAK 995200.0 km-8.3°C13.5°C
AnchorageAK 995210.0 km-8.3°C13.5°C
AnchorageAK 995220.0 km-8.3°C13.5°C
AnchorageAK 995230.0 km-8.3°C13.5°C
AnchorageAK 995240.0 km-8.3°C13.5°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.

What this postal area includes

Anchorage.

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.

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