Molalla, Oregon climate: Normal weather by month, frost dates and records
Molalla's normal year runs from 35°F December nights to 82°F August afternoons, with 46.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.1°C, December lows of 2°C, August highs of 28°C, 1,179 mm of precipitation a year.
- NOAA stationMolalla (7 mi NE)
- Station IDUSC00355681
- Location45.18°N 122.51°W
- Elevation647 ft (197 m)
- Population10,134
On October 22, the normal high in Molalla is 61°F and the normal low 44°F, and the chance of measurable rain or snow is 48%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Molalla.
- Jan 47° 35°
- Feb 51° 36°
- Mar 56° 39°
- Apr 61° 42°
- May 68° 47°
- Jun 72° 51°
- Jul 81° 56°
- Aug 82° 56°
- Sep 77° 52°
- Oct 64° 46°
- Nov 53° 39°
- Dec 46° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Molalla each month?
August is the warmest month, with normal highs of 82°F; December the coldest, with normal lows of 35°F. The most precipitation falls in November (6.89 in), the least in July (0.56 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 47°F | 35°F | 41.4°F | 5.90 | 18 | <1 | 13 | 9 h 10 min |
| February | 51°F | 36°F | 43.9°F | 4.34 | 17 | <1 | 7 | 10 h 20 min |
| March | 56°F | 39°F | 47.3°F | 5.16 | 19 | <1 | 4 | 11 h 50 min |
| April | 61°F | 42°F | 51.4°F | 4.50 | 17 | <1 | 1 | 13 h 30 min |
| May | 68°F | 47°F | 57.3°F | 3.38 | 13 | 1 | <1 | 14 h 50 min |
| June | 72°F | 51°F | 61.7°F | 2.14 | 10 | 1 | <1 | 15 h 40 min |
| July | 81°F | 56°F | 68.1°F | 0.56 | 3 | 6 | <1 | 15 h 20 min |
| August | 82°F | 56°F | 69.3°F | 0.62 | 3 | 7 | <1 | 14 h 10 min |
| September | 77°F | 52°F | 64.1°F | 1.95 | 7 | 3 | <1 | 12 h 40 min |
| October | 64°F | 46°F | 54.7°F | 4.29 | 14 | <1 | 1 | 11 h |
| November | 53°F | 39°F | 46.2°F | 6.89 | 18 | <1 | 5 | 9 h 30 min |
| December | 46°F | 35°F | 40.6°F | 6.69 | 19 | <1 | 12 | 8 h 50 min |
| Year (annual) | 63°F | 44°F | 53.8°F | 46.42 | 158 | 17 | 42 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 9°C | 2°C | 5.2°C | 150 mm |
| February | 11°C | 2°C | 6.6°C | 110 mm |
| March | 13°C | 4°C | 8.5°C | 131 mm |
| April | 16°C | 6°C | 10.8°C | 114 mm |
| May | 20°C | 8°C | 14.1°C | 86 mm |
| June | 22°C | 11°C | 16.5°C | 54 mm |
| July | 27°C | 13°C | 20.1°C | 14 mm |
| August | 28°C | 13°C | 20.7°C | 16 mm |
| September | 25°C | 11°C | 17.8°C | 50 mm |
| October | 18°C | 8°C | 12.6°C | 109 mm |
| November | 12°C | 4°C | 7.9°C | 175 mm |
| December | 8°C | 2°C | 4.8°C | 170 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Estacada (11 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00355681; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Molalla?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (3).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00355681.
When is the last frost in Molalla?
In Molalla, the last spring frost (32°F) comes after March 16 in half of years and after April 12 in one year in ten; the first autumn frost comes before November 19 in half of years and before October 31 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 161 year in 10 after April 12; 9 in 10 after February 24
- First autumn frost, half of years before
- November 191 year in 10 before October 31; 9 in 10 before December 9
NOAA puts the median frost-free season at 247 days, and the season without a hard freeze (28°F) at 297 days.
A hard freeze (28°F) comes after February 14 in half of springs and before December 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Molalla in zone 8b in ZIP code 97038, the nearest ZIP area.
Frost dates for every NOAA station in Oregon · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00355681; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Molalla?
In a normal year in Molalla, 17 days a year reach 90°F (2 of them 100°F or more), 42 nights fall to 32°F or colder and 158 days bring measurable precipitation.
- Days at 90°F or more
- 17a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 42a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 158a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00355681.
How sunny is Molalla?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Molalla, 3.7 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.2 |
| February | 60% | 2.1 |
| March | 59% | 3.0 |
| April | 63% | 4.3 |
| May | 68% | 5.4 |
| June | 70% | 6.0 |
| July | 83% | 6.8 |
| August | 83% | 5.8 |
| September | 78% | 4.3 |
| October | 67% | 2.6 |
| November | 56% | 1.4 |
| December | 52% | 1.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Molalla need?
A normal year in Molalla brings 4,451 heating degree days, 17% fewer than the median U.S. place (5,373), and 390 cooling degree days, 57% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,499 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 732 | 0 |
| February | 592 | 0 |
| March | 550 | 0 |
| April | 411 | 3 |
| May | 254 | 15 |
| June | 134 | 34 |
| July | 26 | 124 |
| August | 17 | 148 |
| September | 90 | 61 |
| October | 323 | 4 |
| November | 566 | 0 |
| December | 756 | 0 |
| Year (annual) | 4,451 | 390 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00355681. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Molalla been warmer than normal lately?
2025 averaged 55.1°F, 1.3°F above the 1991-2020 normal of 53.8°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.7°F | +0.9°F | 46.44 |
| 2022 | 53.8°F | at normal | 47.11 |
| 2023 | 54.2°F | +0.4°F | 38.01 |
| 2024 | 54.4°F | +0.6°F | 43.86 |
| 2025 | 55.1°F | +1.3°F | 45.31 |
Source: observed years: ACIS, station USC00355681. A year counts only with all twelve months complete.
How does Molalla's climate compare?
Molalla is warmer than 82 of the other 104 places with their own NOAA record in Oregon, and wetter than 61. Across the 7,247 U.S. stations with normals, its annual mean of 53.8°F is warmer than 56%.
In the Köppen classification computed from these normals, Molalla is Csb: temperate, dry-summer, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Molalla share this climate record?
Mulino has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Mulino, OR2,146 people · 4 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Molalla's climate
What is the coldest month in Molalla?
December, with a normal high of 46°F and a normal low of 35°F. The warmest is August (82°F by day, 56°F at night).
Does it snow in Molalla?
Yes. NOAA publishes no 1991-2020 snowfall normal for Molalla's NOAA station; the nearest record that keeps one, Estacada (11 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Molalla?
November, with 6.89 in of precipitation in a normal year; the driest is July with 0.56 in.
What plant hardiness zone is Molalla in?
The USDA's 2023 map puts Molalla in zone 8b in ZIP code 97038, the nearest ZIP area.
How late can frost come in Molalla?
In half of years the last 32°F night comes after March 16; in one year in ten it comes after April 12. Waiting until April 12 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Estacada, OR11 miles from this station, 54.0°F a year
- Oregon City, OR13 miles from this station, 55.4°F a year
- Aurora, OR14 miles from this station, 54.8°F a year
- North Willamette Experiment Station, OR14 miles from this station, 53.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made