Richland weather in October: Richland, Washington: normal highs, lows, rain and records for October
Richland in October has a normal high of 64°F and a normal low of 42°F, a daily mean of 53°F, falling from 72°F on the 1st to 56°F by the 31st. Measurable precipitation falls on 7 days in a normal October, 0.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 18°C and low of 5°C, 14 mm of precipitation in October.
- NOAA stationRichland
- Station IDUSC00457015
- Location46.31°N 119.26°W
- Elevation373 ft (114 m)
- Population64,372
- Jan 41° 29°
- Feb 48° 30°
- Mar 57° 35°
- Apr 65° 41°
- May 74° 48°
- Jun 80° 54°
- Jul 89° 60°
- Aug 88° 59°
- Sep 79° 51°
- Oct 64° 42°
- Nov 49° 34°
- Dec 40° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Richland in October?
The normal high is 64°F and the normal low 42°F, for a daily mean of 53.0°F. October is 12.2°F cooler than September and 11.7°F warmer than November. October is the 6th warmest month of the year in Richland and the 9th wettest. Across the month the normal high falls 16°F, from 72°F on October 1 to 56°F on October 31. From one year to the next October's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 51°F and 55°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 72°F | 47°F | 15% | 5% |
| October 8 | 69°F | 44°F | 18% | 6% |
| October 15 | 65°F | 42°F | 21% | 7% |
| October 22 | 61°F | 40°F | 24% | 7% |
| October 31 | 56°F | 37°F | 29% | 8% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 72°F | 47°F | 15% | 5% | 11 h 50 min |
| October 2 | 72°F | 46°F | 15% | 5% | 11 h 40 min |
| October 3 | 71°F | 46°F | 15% | 5% | 11 h 40 min |
| October 4 | 71°F | 46°F | 16% | 5% | 11 h 40 min |
| October 5 | 70°F | 45°F | 16% | 5% | 11 h 30 min |
| October 6 | 70°F | 45°F | 17% | 6% | 11 h 30 min |
| October 7 | 69°F | 45°F | 17% | 6% | 11 h 30 min |
| October 8 | 69°F | 44°F | 18% | 6% | 11 h 20 min |
| October 9 | 68°F | 44°F | 18% | 6% | 11 h 20 min |
| October 10 | 68°F | 44°F | 19% | 6% | 11 h 20 min |
| October 11 | 67°F | 43°F | 19% | 6% | 11 h 10 min |
| October 12 | 67°F | 43°F | 19% | 6% | 11 h 10 min |
| October 13 | 66°F | 43°F | 20% | 6% | 11 h 10 min |
| October 14 | 65°F | 42°F | 20% | 7% | 11 h |
| October 15 | 65°F | 42°F | 21% | 7% | 11 h |
| October 16 | 64°F | 42°F | 21% | 7% | 11 h |
| October 17 | 64°F | 41°F | 22% | 7% | 10 h 50 min |
| October 18 | 63°F | 41°F | 22% | 7% | 10 h 50 min |
| October 19 | 63°F | 41°F | 23% | 7% | 10 h 50 min |
| October 20 | 62°F | 40°F | 23% | 7% | 10 h 40 min |
| October 21 | 62°F | 40°F | 24% | 7% | 10 h 40 min |
| October 22 | 61°F | 40°F | 24% | 7% | 10 h 40 min |
| October 23 | 60°F | 39°F | 25% | 7% | 10 h 30 min |
| October 24 | 60°F | 39°F | 25% | 7% | 10 h 30 min |
| October 25 | 59°F | 39°F | 26% | 8% | 10 h 30 min |
| October 26 | 59°F | 39°F | 26% | 8% | 10 h 30 min |
| October 27 | 58°F | 38°F | 27% | 8% | 10 h 20 min |
| October 28 | 58°F | 38°F | 27% | 8% | 10 h 20 min |
| October 29 | 57°F | 38°F | 28% | 8% | 10 h 20 min |
| October 30 | 57°F | 37°F | 28% | 8% | 10 h 10 min |
| October 31 | 56°F | 37°F | 29% | 8% | 10 h 10 min |
- Normal high
- 64°FOctober average
- Normal low
- 42°FOctober average
- Precipitation
- 0.54 inmonth total
- Days with precipitation
- 70.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 11 h 50 min to 10 h 10 minOctober 1 to October 31
- Days at 70°F or more
- 8
- Days at 80°F or more
- 1
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00457015; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Richland in October?
On a given October day the chance of 0.01 inch or more is 21% on average, highest around October 31 (29%). In all, 0.54 in falls on 7 days of a normal October.
In a normal October in Richland, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00457015.
What are the records for October in Richland?
The warmest October temperature on this station's record (since 1944) is 93°F, on October 6, 2020; the coldest is 13°F, on October 31, 2002. The wettest October brought 2.41 in (1947).
The October mean against the 1991-2020 normal of 53.0°F: 2021 54.2°F (+1.2), 2022 58.8°F (+5.8), 2023 53.9°F (+0.9), 2024 54.5°F (+1.5), 2025 52.7°F (−0.3). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.2°F | +1.2°F | 0.90 in |
| 2022 | 58.8°F | +5.8°F | 0.73 in |
| 2023 | 53.9°F | +0.9°F | 0.76 in |
| 2024 | 54.5°F | +1.5°F | 0.20 in |
| 2025 | 52.7°F | −0.3°F | 0.92 in |
Source: records: ACIS, station USC00457015; recent months: ACIS, station USC00457015. Records and recent months use complete months only.
How does October in Richland compare across Washington?
Across the 96 places PlainClimate covers in Washington, October normal highs run from 56°F in Easton to 66°F in Kennewick; Richland's is 64°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.