June
June · September · July
87climate match
United States · 1991–2020
Best time to visit
Forest Grove.
June leads for comfortable weather in Forest Grove: typically 23.6°C by day, 10.2°C at night, with 33 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJune
Typical high23.6°C
Typical low10.2°C
Rain in June33 mm
August
August · July · September
74climate match
June
June · May · September
85climate match
The weakest month is January, scoring 5 against June’s 87 — days reach only 8°C, 16° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
58° / 0.8°
Feb
910.4° / 1°
Mar
1713.3° / 2.5°
Apr
4116.3° / 4.3°
May
6920.8° / 7.7°
Jun
8723.6° / 10.2°
Jul
8228.1° / 12.4°
Aug
8028.5° / 12.3°
Sep
8525.2° / 9.6°
Oct
5118.1° / 5.7°
Nov
511.3° / 2.8°
Dec
57.4° / 0.8°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 8°C | 0.8°C | 181 mm | 15.2 | 9 h 04 | 5 | Strong coverage |
| February | 10.4°C | 1°C | 125 mm | 12.5 | 10 h 18 | 9 | Strong coverage |
| March | 13.3°C | 2.5°C | 132 mm | 15.5 | 11 h 46 | 17 | Strong coverage |
| April | 16.3°C | 4.3°C | 81 mm | 12.3 | 13 h 27 | 41 | Strong coverage |
| May | 20.8°C | 7.7°C | 53 mm | 8.5 | 14 h 52 | 69 | Strong coverage |
| June | 23.6°C | 10.2°C | 33 mm | 6 | 15 h 40 | 87 | Strong coverage |
| July | 28.1°C | 12.4°C | 7 mm | 1.7 | 15 h 21 | 82 | Strong coverage |
| August | 28.5°C | 12.3°C | 11 mm | 1.9 | 14 h 07 | 80 | Strong coverage |
| September | 25.2°C | 9.6°C | 31 mm | 4.3 | 12 h 28 | 85 | Strong coverage |
| October | 18.1°C | 5.7°C | 82 mm | 9.3 | 10 h 51 | 51 | Strong coverage |
| November | 11.3°C | 2.8°C | 178 mm | 15 | 9 h 26 | 5 | Strong coverage |
| December | 7.4°C | 0.8°C | 213 mm | 16.6 | 8 h 43 | 5 | Strong coverage |
What has changed
Forest Grove runs -0.3°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+0.2
Feb
-1.6
Mar
-1.1
Apr
-0.4
May
0.0
Jun
-0.3
Jul
+0.3
Aug
+0.6
Sep
-0.2
Oct
-0.5
Nov
-0.4
Dec
-0.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 19.4°C19 Jan 2005 | -23.9°C12 Jan 1909 | 155 mm12 Jan 1912 | 398 mm1953 · driest 11 mm in 1985 | 131 |
| February | 25.0°C27 Feb 1905 | -24.4°C3 Feb 1950 | 91 mm12 Feb 2019 | 529 mm1999 · driest 5 mm in 1920 | 130 |
| March | 27.8°C26 Mar 1994 | -10.6°C1 Mar 1971 | 58 mm18 Mar 1938 | 295 mm1904 · driest 10 mm in 2021 | 132 |
| April | 33.9°C17 Apr 1897 | -5.0°C13 Apr 1903 | 52 mm27 Apr 1962 | 202 mm1996 · driest 3 mm in 2021 | 131 |
| May | 38.3°C28 May 1983 | -2.2°C1 May 1954 | 52 mm31 May 1895 | 159 mm1895 · driest 0 mm in 2023 | 128 |
| June | 45.0°C29 Jun 2021 | 0.0°C2 Jun 1999 | 46 mm7 Jun 1985 | 116 mm1913 · driest 1 mm in 1904 | 120 |
| July | 42.8°C19 Jul 1956 | 1.1°C2 Jul 1955 | 27 mm18 Jul 1983 | 59 mm1983 · driest 0 mm in 2021 | 118 |
| August | 42.2°C9 Aug 1981 | 0.6°C22 Aug 1909 | 41 mm24 Aug 1977 | 102 mm1968 · driest 0 mm in 1904 | 116 |
| September | 40.0°C3 Sep 1988 | -2.8°C25 Sep 1908 | 107 mm30 Sep 2013 | 168 mm2013 · driest 0 mm in 1993 | 120 |
| October | 33.9°C2 Oct 1988 | -6.7°C30 Oct 2002 | 67 mm27 Oct 1994 | 277 mm1947 · driest 0 mm in 1917 | 127 |
| November | 22.2°C5 Nov 2001 | -14.4°C24 Nov 1985 | 101 mm14 Nov 1896 | 466 mm1896 · driest 10 mm in 1936 | 128 |
| December | 17.8°C25 Dec 1980 | -20.0°C8 Dec 1972 | 109 mm31 Dec 1904 | 476 mm1933 · driest 15 mm in 1976 | 126 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 13 | 6 |
| February | 0 | 0 | 12 | 4 |
| March | <1 | 0 | 8 | 4 |
| April | 2 | <1 | 3 | 2 |
| May | 7 | 2 | <1 | 1 |
| June | 11 | 4 | 0 | <1 |
| July | 22 | 12 | 0 | <1 |
| August | 24 | 13 | 0 | <1 |
| September | 15 | 7 | 0 | 1 |
| October | 3 | <1 | 2 | 3 |
| November | 0 | 0 | 8 | 5 |
| December | 0 | 0 | 13 | 6 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 53% | 22% | 67% | 4.4–9.3°C |
| February | <1% | 50% | 18% | 64% | 7.4–12.5°C |
| March | 7% | 47% | 13% | 63% | 10.7–16.0°C |
| April | 22% | 36% | 7% | 47% | 14.1–18.8°C |
| May | 45% | 27% | 4% | 32% | 17.9–23.4°C |
| June | 68% | 20% | 3% | 19% | 21.4–26.7°C |
| July | 92% | 6% | <1% | 3% | 25.6–30.2°C |
| August | 91% | 8% | 2% | 8% | 25.9–30.2°C |
| September | 74% | 17% | 4% | 22% | 22.1–27.3°C |
| October | 30% | 33% | 10% | 42% | 15.5–20.3°C |
| November | <1% | 52% | 22% | 70% | 9.3–13.2°C |
| December | 0% | 55% | 23% | 72% | 5.2–9.4°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5727190
- NOAA station
- USC00352997 · FOREST GROVE
- Station distance
- 0.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 25 usable years
- Daylight
- Calculated from latitude 45.52°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.