Point Forecast: Prosser WA  46.22N 119.79W (Elev. 715 ft)	Last Update: 4:01 am PDT Sep 4, 2026

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Weather Elements Weather/Precipitation Fire Weather Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Mixing Height  x100ftx100m Trans. Wind  ktmphkm/hm/s

48-Hour Period Starting: 8am Fri, Sep 4 20269am Fri, Sep 4 202610am Fri, Sep 4 202611am Fri, Sep 4 202612pm Fri, Sep 4 20261pm Fri, Sep 4 20262pm Fri, Sep 4 20263pm Fri, Sep 4 20264pm Fri, Sep 4 20265pm Fri, Sep 4 20266pm Fri, Sep 4 20267pm Fri, Sep 4 20268pm Fri, Sep 4 20269pm Fri, Sep 4 202610pm Fri, Sep 4 202611pm Fri, Sep 4 202612am Sat, Sep 5 20261am Sat, Sep 5 20262am Sat, Sep 5 20263am Sat, Sep 5 20264am Sat, Sep 5 20265am Sat, Sep 5 20266am Sat, Sep 5 20267am Sat, Sep 5 20268am Sat, Sep 5 20269am Sat, Sep 5 202610am Sat, Sep 5 202611am Sat, Sep 5 202612pm Sat, Sep 5 20261pm Sat, Sep 5 20262pm Sat, Sep 5 20263pm Sat, Sep 5 20264pm Sat, Sep 5 20265pm Sat, Sep 5 20266pm Sat, Sep 5 20267pm Sat, Sep 5 20268pm Sat, Sep 5 20269pm Sat, Sep 5 202610pm Sat, Sep 5 202611pm Sat, Sep 5 202612am Sun, Sep 6 20261am Sun, Sep 6 20262am Sun, Sep 6 20263am Sun, Sep 6 20264am Sun, Sep 6 20265am Sun, Sep 6 20266am Sun, Sep 6 20267am Sun, Sep 6 20268am Sun, Sep 6 20269am Sun, Sep 6 202610am Sun, Sep 6 202611am Sun, Sep 6 202612pm Sun, Sep 6 20261pm Sun, Sep 6 20262pm Sun, Sep 6 20263pm Sun, Sep 6 20264pm Sun, Sep 6 20265pm Sun, Sep 6 20266pm Sun, Sep 6 20267pm Sun, Sep 6 20268pm Sun, Sep 6 20269pm Sun, Sep 6 202610pm Sun, Sep 6 202611pm Sun, Sep 6 202612am Mon, Sep 7 20261am Mon, Sep 7 20262am Mon, Sep 7 20263am Mon, Sep 7 20264am Mon, Sep 7 20265am Mon, Sep 7 20266am Mon, Sep 7 20267am Mon, Sep 7 20268am Mon, Sep 7 20269am Mon, Sep 7 202610am Mon, Sep 7 202611am Mon, Sep 7 202612pm Mon, Sep 7 20261pm Mon, Sep 7 20262pm Mon, Sep 7 20263pm Mon, Sep 7 20264pm Mon, Sep 7 20265pm Mon, Sep 7 20266pm Mon, Sep 7 20267pm Mon, Sep 7 20268pm Mon, Sep 7 20269pm Mon, Sep 7 202610pm Mon, Sep 7 202611pm Mon, Sep 7 202612am Tue, Sep 8 20261am Tue, Sep 8 20262am Tue, Sep 8 20263am Tue, Sep 8 20264am Tue, Sep 8 20265am Tue, Sep 8 20266am Tue, Sep 8 20267am Tue, Sep 8 20268am Tue, Sep 8 20269am Tue, Sep 8 202610am Tue, Sep 8 202611am Tue, Sep 8 202612pm Tue, Sep 8 20261pm Tue, Sep 8 20262pm Tue, Sep 8 20263pm Tue, Sep 8 20264pm Tue, Sep 8 20265pm Tue, Sep 8 20266pm Tue, Sep 8 20267pm Tue, Sep 8 2026

Date	09/04																09/05
Hour (PDT)	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07
Temperature (°F)	50	54	60	63	66	69	71	71	73	71	71	68	62	59	56	54	53	51	50	48	47	47	44	47
Dewpoint (°F)	50	49	51	50	50	51	50	48	49	49	50	53	52	51	51	50	50	50	49	47	47	47	44	47
Heat Index (°F)
Surface Wind (mph)	0	0	1	1	1	1	1	2	2	2	2	1	1	0	0	0	0	0	0	0	0	0	0	0
Wind Dir	N	SW	S	S	S	S	SE	S	S	S	S	SE	SE	E	NE	N	N	NW	W	NW	W	N	N	N
Gust
Sky Cover (%)	63	54	53	28	30	20	18	14	9	14	23	24	17	8	11	17	18	9	9	15	16	57	57	57
Precipitation Potential (%)	7	7	7	4	4	4	5	5	5	2	2	2	2	2	2	3	3	3	5	5	5	36	36	36
Relative Humidity (%)	100	84	71	63	57	52	47	44	43	45	48	58	69	76	82	85	90	95	97	98	99	100	100	100
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																	09/06
Hour (PDT)	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07
Temperature (°F)	51	55	60	62	64	67	69	70	71	70	69	66	61	58	55	53	51	50	49	47	45	45	46	48
Dewpoint (°F)	49	50	52	52	53	54	53	53	53	54	54	56	56	56	54	52	51	50	49	47	45	45	46	48
Heat Index (°F)
Surface Wind (mph)	1	1	1	2	2	2	2	2	2	2	2	2	1	1	1	0	0	0	0	0	0	1	1	1
Wind Dir	W	W	W	S	S	S	SW	SW	SW	W	W	W	N	N	N	N	N	N	N	N	N	NW	NW	NW
Gust
Sky Cover (%)	36	36	36	50	50	50	31	31	31	74	74	74	44	44	44	49	49	49	57	57	57	65	65	65
Precipitation Potential (%)	11	11	11	12	12	12	2	2	2	1	1	1	1	1	1	2	2	2	2	2	2	12	12	12
Relative Humidity (%)	94	82	75	71	67	63	57	54	52	56	59	71	85	92	95	97	99	100	100	100	100	100	100	99
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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