Best year time to visit Coos, Lower Umpqua, and Siuslaw Reservation

General weather information about Coos, Lower Umpqua, and Siuslaw Reservation

Average annual temperature is 11.6 °C

Absolute maximum temperature: 35.9 °C

Absolute minimum temperature: -4.9 °C

Number of sunny days: 176 days

Number of rainy days: 188 days

Number of snow days: 1 day

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* Weather data for Coos, Lower Umpqua, and Siuslaw Reservation United States is based on climate observations for 2026 year

Coos, Lower Umpqua, and Siuslaw Reservation air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	15.4	14.1	18.3	24.1	32.0	26.1	30.5	35.9	29.9	29.2	18.3	16.1
Average daytime temperature (°C)	10.7	9.6	10.1	12.3	18.0	20.3	23.3	25.0	21.1	18.3	13.9	12.9
Average temperature (°C)	6.9	5.5	5.7	8.6	13.1	14.7	17.4	18.7	15.8	13.2	9.7	9.8
Average night temperature (°C)	4.7	2.5	2.9	6.1	9.6	10.4	12.4	13.9	11.8	10.2	7.1	7.8
Absolute minimum temperature (°C)	-2.9	-4.6	-4.9	0.6	5.4	6.8	9.9	10.7	7.6	3.2	1.0	1.8

Coos, Lower Umpqua, and Siuslaw Reservation monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	9.0
Daylight mean duration (h)	9.3	10.5	11.9	13.5	14.7	15.4	15.1	14.0	12.5	11.0	9.7	9.0
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	9.0	8.0
Sunshine mean duration (h)	3.6	5.9	6.0	6.7	10.1	12.3	12.9	11.5	9.2	6.8	5.0	2.9
Precipitation (mm)	242	202	283	320	31	7	3	7	103	165	237	425
Sunny days	8	10	4	6	20	25	26	26	16	14	13	8
Rainy days	23	17	27	24	11	5	5	5	14	17	17	23
Snow days	0	1	0	0	0	0	0	0	0	0	0	0

Coos, Lower Umpqua, and Siuslaw Reservation - weather forecast by months

Best time to visit Coos, Lower Umpqua, and Siuslaw Reservation:

The best time to visit Coos, Lower Umpqua, and Siuslaw Reservation during the most sunny months:

May — 10.1(h)
June — 12.3(h)
July — 12.9(h)
August — 11.5(h)

Months with the longest average daylight duration in Coos, Lower Umpqua, and Siuslaw Reservation:

June — 15.4(h)

The largest precipitation sum in Coos, Lower Umpqua, and Siuslaw Reservation is at

January — 242(mm)

March — 283(mm)

April — 320(mm)

November — 237(mm)

December — 425(mm)

Weather forecast in the closest to Coos, Lower Umpqua, and Siuslaw Reservation admin centers

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Frequently asked questions

When is the best time to visit Coos, Lower Umpqua, and Siuslaw Reservation?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Coos, Lower Umpqua, and Siuslaw Reservation.

What is the weather like in Coos, Lower Umpqua, and Siuslaw Reservation?

See average temperature, rainfall and daylight hours for Coos, Lower Umpqua, and Siuslaw Reservation by month in the table above.

How many sunny days does Coos, Lower Umpqua, and Siuslaw Reservation have?

The monthly weather statistics above show sunshine and rainfall patterns for Coos, Lower Umpqua, and Siuslaw Reservation throughout the year.