Lacomb, Oregon climate: Normal weather by month, frost dates and records
Lacomb's normal year runs from 33°F December nights to 81°F July afternoons, with 57.2 inches of precipitation and 2 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.8°C, December lows of 1°C, July highs of 27°C, 1,454 mm of precipitation a year.
- NOAA stationLacomb (3 mi NNE)
- Station IDUSC00354606
- Location44.63°N 122.72°W
- Elevation520 ft (159 m)
- Population (census place)816
On October 23, the normal high in Lacomb is 60°F and the normal low 40°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 Lacomb.
- Jan 47° 33°
- Feb 50° 34°
- Mar 55° 35°
- Apr 60° 38°
- May 67° 43°
- Jun 72° 47°
- Jul 81° 50°
- Aug 82° 49°
- Sep 76° 46°
- Oct 63° 41°
- Nov 52° 37°
- Dec 45° 33°
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 Lacomb each month?
July is the warmest month, with normal highs of 81°F; December the coldest, with normal lows of 33°F. The most precipitation falls in December (8.79 in), the least in July (0.55 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 47°F | 33°F | 40.0°F | 7.50 | 0.3 | 19 | <1 | 14 | 9 h 10 min |
| February | 50°F | 34°F | 42.0°F | 5.82 | 0.9 | 17 | <1 | 13 | 10 h 20 min |
| March | 55°F | 35°F | 45.2°F | 6.45 | 0.1 | 19 | <1 | 10 | 11 h 50 min |
| April | 60°F | 38°F | 48.8°F | 5.46 | 0.0 | 18 | <1 | 5 | 13 h 30 min |
| May | 67°F | 43°F | 54.8°F | 3.83 | 0.0 | 14 | <1 | 1 | 14 h 50 min |
| June | 72°F | 47°F | 59.4°F | 2.90 | 0.0 | 10 | 1 | <1 | 15 h 30 min |
| July | 81°F | 50°F | 65.5°F | 0.55 | 0.0 | 3 | 5 | <1 | 15 h 20 min |
| August | 82°F | 49°F | 65.5°F | 0.61 | 0.0 | 3 | 5 | <1 | 14 h 10 min |
| September | 76°F | 46°F | 60.8°F | 2.28 | 0.0 | 7 | 2 | <1 | 12 h 40 min |
| October | 63°F | 41°F | 51.9°F | 5.15 | 0.0 | 13 | <1 | 3 | 11 h |
| November | 52°F | 37°F | 44.1°F | 7.89 | 0.0 | 19 | <1 | 9 | 9 h 40 min |
| December | 45°F | 33°F | 39.3°F | 8.79 | 0.4 | 20 | <1 | 14 | 8 h 50 min |
| Year (annual) | 62°F | 40°F | 51.4°F | 57.23 | 1.7 | 162 | 13 | 69 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 8°C | 1°C | 4.4°C | 191 mm | 1 cm |
| February | 10°C | 1°C | 5.6°C | 148 mm | 2 cm |
| March | 13°C | 2°C | 7.3°C | 164 mm | 0 cm |
| April | 15°C | 3°C | 9.3°C | 139 mm | 0 cm |
| May | 19°C | 6°C | 12.7°C | 97 mm | 0 cm |
| June | 22°C | 8°C | 15.2°C | 74 mm | 0 cm |
| July | 27°C | 10°C | 18.6°C | 14 mm | 0 cm |
| August | 28°C | 10°C | 18.6°C | 15 mm | 0 cm |
| September | 24°C | 8°C | 16.0°C | 58 mm | 0 cm |
| October | 17°C | 5°C | 11.1°C | 131 mm | 0 cm |
| November | 11°C | 3°C | 6.7°C | 200 mm | 0 cm |
| December | 7°C | 1°C | 4.1°C | 223 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00354606; 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 Lacomb?
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 USC00354606.
When is the last frost in Lacomb?
In Lacomb, the last spring frost (32°F) comes after April 26 in half of years and after May 11 in one year in ten; the first autumn frost comes before October 24 in half of years and before October 5 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
- April 261 year in 10 after May 11; 9 in 10 after April 4
- First autumn frost, half of years before
- October 241 year in 10 before October 5; 9 in 10 before November 14
NOAA puts the median frost-free season at 184 days, and the season without a hard freeze (28°F) at 237 days.
A hard freeze (28°F) comes after March 24 in half of springs and before November 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lacomb in zone 8b in ZIP code 97355, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Lacomb's NOAA station is in zone 8b: the coldest night of a typical year reaches 18°F (25 complete years).
Frost dates for every NOAA station in Oregon · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00354606; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Lacomb?
In a normal year in Lacomb, 13 days a year reach 90°F (1 of them 100°F or more), 69 nights fall to 32°F or colder and 162 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 69a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 162a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in this station's record (since 1973) is 113°F, on June 29, 2021; the lowest is 1°F, on January 1, 1979.
The wettest calendar year on that record is 1998, with 75.40 in; the snowiest season is 1974–75, with 9.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00354606; records: ACIS (NOAA Regional Climate Centers), station USC00354606. Records use complete months only; a month missing more than three days is left out.
How sunny is Lacomb?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lacomb, 3.9 kWh per square metre a day. July is the sunniest month (89%) and December the cloudiest (53%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 56% | 1.3 |
| February | 61% | 2.2 |
| March | 59% | 3.1 |
| April | 64% | 4.5 |
| May | 70% | 5.7 |
| June | 74% | 6.4 |
| July | 89% | 7.4 |
| August | 88% | 6.3 |
| September | 81% | 4.6 |
| October | 70% | 2.8 |
| November | 58% | 1.5 |
| December | 53% | 1.1 |
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 Lacomb need?
A normal year in Lacomb brings 5,117 heating degree days, 5% fewer than the median U.S. place (5,373), and 184 cooling degree days, 80% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,935 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 777 | 0 |
| February | 645 | 0 |
| March | 615 | 0 |
| April | 486 | 0 |
| May | 320 | 4 |
| June | 184 | 16 |
| July | 57 | 71 |
| August | 53 | 70 |
| September | 150 | 22 |
| October | 405 | 1 |
| November | 626 | 0 |
| December | 798 | 0 |
| Year (annual) | 5,117 | 184 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00354606. 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 Lacomb been warmer than normal lately?
2025 averaged 53.1°F, 1.7°F above the 1991-2020 normal of 51.4°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 52.3°F | +0.9°F | 52.74 | – |
| 2022 | 51.3°F | −0.1°F | 50.89 | 0.0 |
| 2023 | 52.0°F | +0.6°F | 47.21 | 0.0 |
| 2024 | 52.2°F | +0.8°F | 60.61 | 1.0 |
| 2025 | 53.1°F | +1.7°F | 50.54 | – |
Over 42 complete years from 1974 to 2025, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00354606; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Lacomb's climate compare?
Lacomb is warmer than 45 of the other 104 places with their own NOAA record in Oregon, and wetter than 73. Across the 7,247 U.S. stations with normals, its annual mean of 51.4°F is warmer than 47%.
In the Köppen classification computed from these normals, Lacomb 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.
Questions about Lacomb's climate
What is the coldest month in Lacomb?
December, with a normal high of 45°F and a normal low of 33°F. The warmest is July (81°F by day, 50°F at night).
Does it snow in Lacomb?
Yes: 2 inches in a normal year, falling on 1 days with 0.1 inch or more, the most in February (0.9 inches).
What is the rainiest month in Lacomb?
December, with 8.79 in of precipitation in a normal year; the driest is July with 0.55 in.
What plant hardiness zone is Lacomb in?
The USDA's 2023 map puts Lacomb in zone 8b in ZIP code 97355, the nearest ZIP area. By the same method at Lacomb's NOAA station, the coldest night of a typical year reaches 18°F (25 years, 1991-2020): zone 8b.
How late can frost come in Lacomb?
In half of years the last 32°F night comes after April 26; in one year in ten it comes after May 11. Waiting until May 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oregon climateThe statewide normals and every place in the state
- Lebanon, OR11 miles from this station, 54.9°F a year
- Stayton, OR12 miles from this station, 52.8°F a year
- Foster Dam, OR15 miles from this station, 52.4°F a year
- Silver Creek Falls, OR17 miles from this station, 48.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made