Afternoon heat in Jennings Lodge trails that of 84% of U.S. towns
On a normal January night the air cools to about 36°. By January nights alone, it runs milder than 84% of U.S. towns. Compared with 1901–2000, the average now sits 1.3° higher. The frost-free window for a garden runs roughly March 18 to November 18.
A year in Jennings Lodge at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jennings Lodge’s climate
Compared with towns across the U.S., with Jennings Lodge’s place in Oregon beside it.
What a year in Jennings Lodge feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 244 frost-free days a year
In half of years the last 32° night comes by March 18 and the first by November 18. Frost and day counts come from NOAA’s station at Oregon City, OR, 2.7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Jennings Lodge’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 22°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 4 inches of snow a winter
Snow, measured at Portland Kgw-tv, OR, is heaviest from January through February, about 1 inches a month. Precipitation (rain plus melted snow) adds up to 41 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 155 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Jennings Lodge
88% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Oregon City, OR.
Living with Jennings Lodge’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
244 frost-free days in zone 9a. The last frost comes by Mar 18 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 18.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 0.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Jennings Lodge from natural hazards, earthquakes are the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 13%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Jennings Lodge and its neighbors
Every town next door is within a degree of Jennings Lodge in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Jennings Lodge’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Jennings Lodge, OR | 36° | 82° | 41" | 3.6" |
| Ben Lomond, CA | 40° | 79° | 43" | 0.0" |
| Mercer Island, WA | 37° | 77° | 37" | 3.8" |
| Brigantine, NJ | 28° | 83° | 45" | 10" |
| Swannanoa, NC | 27° | 83° | 48" | 2.1" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Jennings Lodge averaged 1.3° warmer than the 1900s. The biggest change is in January (+3.0°).
A smaller shift than in 55% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Jennings Lodge compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Jennings Lodge’s place among Oregon’s.
Jennings Lodge weather by month
Highs, lows and precipitation from NOAA’s grid at Jennings Lodge’s center; snow, wet days and snow on the ground from Portland Kgw-tv, OR. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 47° | 36° | 5.8" | 1.3" | 20 | 1 | 34° – 46° |
| February | 51° | 37° | 4.3" | 1.4" | 16 | 1 | 37° – 49° |
| March | 56° | 39° | 4.5" | 0.0" | 18 | 0 | 45° – 53° |
| April | 62° | 42° | 3.5" | 0.0" | 17 | 0 | 47° – 57° |
| May | 69° | 48° | 2.5" | 0.0" | 12 | 0 | 53° – 63° |
| June | 74° | 52° | 1.6" | 0.0" | 9 | 0 | 59° – 69° |
| July | 82° | 56° | 0.4" | 0.0" | 3 | 0 | 63° – 72° |
| August | 82° | 56° | 0.6" | 0.0" | 3 | 0 | 65° – 72° |
| September | 76° | 52° | 1.5" | 0.0" | 7 | 0 | 60° – 66° |
| October | 64° | 45° | 3.8" | 0.0" | 13 | 0 | 51° – 59° |
| November | 53° | 40° | 6.2" | 0.0" | 19 | 0 | 41° – 52° |
| December | 46° | 36° | 6.9" | 0.9" | 20 | 0 | 37° – 44° |
| Year | 63° | 45° | 41.4" | 3.6" | 155 | 2 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 37° to 49°. September is the most reliable, staying within 6°.
Where Jennings Lodge’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Jennings Lodge’s center.
- Snow: Portland Kgw-tv, OR.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Oregon City, OR, 2.7 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Jennings Lodge’s climate
What is the weather like in Jennings Lodge?
A typical July afternoon reaches 82°, a January night drops to 36°, and about 4 inches of snow falls in a normal winter. Milder January nights than 84% of U.S. towns; cooler July afternoons than 84% of U.S. towns.
How cold does it get in Jennings Lodge in winter?
December nights average 36°. About 30 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 37°.
How much snow does Jennings Lodge get?
About 3.6 inches in a normal winter at Portland Kgw-tv, OR, heaviest from January through February, about 1 inches a month, with snow on the ground about 2 days a year.
How hot does it get in Jennings Lodge?
July, with a typical high of 82° and a low of 56°. About 20 days a year reach 90° and 2 reach 100° (Oregon City, OR).
When is the first and last frost in Jennings Lodge?
In half of years the last spring frost (32°) comes by March 18 and the first fall frost by November 18, about 244 frost-free days, at Oregon City, OR.
What growing zone is Jennings Lodge in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 22°.
What is the best time of year to visit Jennings Lodge?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Jennings Lodge getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 55% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Jennings Lodge.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.