Your seasonal context
Understand the place before the date.
The 97133 area uses a representative location near 45.669°, -123.028°. In the nearby historical climate grid, August is the warmest month on average (17.9°C), while December is the coolest (3.5°C). December has the highest mean daily precipitation (8.26 mm).
No monthly mean in this grid is below freezing. Individual cold nights can still occur; this does not establish a frost-free season. Use these seasonal differences to frame your questions for a local gardening adviser.
Light at your latitude
At 45.669° N, the length of the day changes independently of temperature. Compare the middle of three seasons when planning your garden.
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.
| Month | Mean air temperature | Mean precipitation / day |
|---|---|---|
| January | 4.0°C (39°F) | 7.19 mm |
| February | 4.3°C (40°F) | 5.15 mm |
| March | 6.3°C (43°F) | 5.76 mm |
| April | 8.3°C (47°F) | 3.88 mm |
| May | 11.8°C (53°F) | 2.36 mm |
| June | 14.3°C (58°F) | 1.65 mm |
| July | 17.4°C (63°F) | 0.37 mm |
| August | 17.9°C (64°F) | 0.62 mm |
| September | 15.4°C (60°F) | 1.92 mm |
| October | 10.6°C (51°F) | 4.47 mm |
| November | 6.3°C (43°F) | 7.50 mm |
| December | 3.5°C (38°F) | 8.26 mm |
NASA POWER regional grid, 0.5° latitude × 0.625° longitude. Grid center 45.500°, -123.125°. 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.
| Postal area | Distance | Jan | Jul |
|---|---|---|---|
| North Plains97133 · this area | — | 4.0°C | 17.4°C |
| BanksOR 97106 | 7.4 km | 4.0°C | 17.4°C |
| ManningOR 97125 | 10.5 km | 4.0°C | 17.4°C |
| Forest GroveOR 97116 | 14.3 km | 4.0°C | 17.4°C |
| ScappooseOR 97056 | 15.0 km | 3.5°C | 16.6°C |
| PortlandOR 97231 | 15.1 km | 4.0°C | 17.4°C |
| HillsboroOR 97124 | 15.3 km | 4.0°C | 17.4°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
North Plains.
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.
