Point Forecast: Grinnell IA  41.75N 92.72W	Last Update: 6:33 am CDT May 12, 2025

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Weather Elements Fire Weather Aviation 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 Vent Rate (x1000 mph-ft) Ceiling Height Visibility

48-Hour Period Starting: 7am Mon, May 12 20258am Mon, May 12 20259am Mon, May 12 202510am Mon, May 12 202511am Mon, May 12 202512pm Mon, May 12 20251pm Mon, May 12 20252pm Mon, May 12 20253pm Mon, May 12 20254pm Mon, May 12 20255pm Mon, May 12 20256pm Mon, May 12 20257pm Mon, May 12 20258pm Mon, May 12 20259pm Mon, May 12 202510pm Mon, May 12 202511pm Mon, May 12 202512am Tue, May 13 20251am Tue, May 13 20252am Tue, May 13 20253am Tue, May 13 20254am Tue, May 13 20255am Tue, May 13 20256am Tue, May 13 20257am Tue, May 13 20258am Tue, May 13 20259am Tue, May 13 202510am Tue, May 13 202511am Tue, May 13 202512pm Tue, May 13 20251pm Tue, May 13 20252pm Tue, May 13 20253pm Tue, May 13 20254pm Tue, May 13 20255pm Tue, May 13 20256pm Tue, May 13 20257pm Tue, May 13 20258pm Tue, May 13 20259pm Tue, May 13 202510pm Tue, May 13 202511pm Tue, May 13 202512am Wed, May 14 20251am Wed, May 14 20252am Wed, May 14 20253am Wed, May 14 20254am Wed, May 14 20255am Wed, May 14 20256am Wed, May 14 20257am Wed, May 14 20258am Wed, May 14 20259am Wed, May 14 202510am Wed, May 14 202511am Wed, May 14 202512pm Wed, May 14 20251pm Wed, May 14 20252pm Wed, May 14 20253pm Wed, May 14 20254pm Wed, May 14 20255pm Wed, May 14 20256pm Wed, May 14 20257pm Wed, May 14 20258pm Wed, May 14 20259pm Wed, May 14 202510pm Wed, May 14 202511pm Wed, May 14 202512am Thu, May 15 20251am Thu, May 15 20252am Thu, May 15 20253am Thu, May 15 20254am Thu, May 15 20255am Thu, May 15 20256am Thu, May 15 20257am Thu, May 15 20258am Thu, May 15 20259am Thu, May 15 202510am Thu, May 15 202511am Thu, May 15 202512pm Thu, May 15 20251pm Thu, May 15 20252pm Thu, May 15 20253pm Thu, May 15 20254pm Thu, May 15 20255pm Thu, May 15 20256pm Thu, May 15 20257pm Thu, May 15 20258pm Thu, May 15 20259pm Thu, May 15 202510pm Thu, May 15 202511pm Thu, May 15 202512am Fri, May 16 20251am Fri, May 16 20252am Fri, May 16 20253am Fri, May 16 20254am Fri, May 16 20255am Fri, May 16 20256am Fri, May 16 20257am Fri, May 16 20258am Fri, May 16 20259am Fri, May 16 202510am Fri, May 16 202511am Fri, May 16 202512pm Fri, May 16 20251pm Fri, May 16 20252pm Fri, May 16 20253pm Fri, May 16 20254pm Fri, May 16 20255pm Fri, May 16 20256pm Fri, May 16 2025

Date	05/12																	05/13
Hour (CDT)	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06
Temperature (°F)	56	60	67	72	74	77	79	82	84	84	84	83	81	78	71	69	66	65	64	62	60	60	59	58
Dewpoint (°F)	42	44	47	48	47	47	46	46	47	47	46	47	49	50	50	52	54	54	54	53	54	54	55	55
Heat Index (°F)						77	79	80	82	82	82	81	80	78
Surface Wind (mph)	3	5	6	7	8	8	9	9	10	10	9	8	7	6	6	6	6	6	6	6	6	6	5	5
Wind Dir	S	ESE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	ESE	SE	SE	SE	SE	SE	SE	SE	SE
Gust
Sky Cover (%)	16	16	22	12	9	13	10	21	18	24	31	27	45	47	41	44	44	39	38	28	23	30	32	34
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	2	2	2	2	2	2	2	1	1	1	1	1
Relative Humidity (%)	60	55	49	42	38	35	31	28	28	28	27	28	33	37	47	55	65	68	70	72	81	81	87	90
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																		05/14
Hour (CDT)	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06
Temperature (°F)	60	62	66	72	74	76	78	78	79	80	79	79	78	75	71	68	67	65	64	63	62	61	61	61
Dewpoint (°F)	57	59	60	61	60	60	60	59	59	58	58	58	58	58	58	58	58	58	58	58	57	57	57	57
Heat Index (°F)						76	78	78	79	81	79	79	78	75
Surface Wind (mph)	5	6	6	7	7	7	8	8	8	9	8	8	7	6	6	6	6	6	6	6	6	6	6	6
Wind Dir	SE	SE	SSE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SSE	SSE	SSE	SE	SE	SE	SE
Gust
Sky Cover (%)	46	45	34	40	41	51	54	51	48	44	42	40	40	39	39	39	22	18	14	12	9	7	7	7
Precipitation Potential (%)	10	10	10	11	11	11	21	21	21	21	21	21	2	2	2	2	2	2	0	0	0	0	0	0
Relative Humidity (%)	90	90	81	68	62	58	54	52	50	47	49	49	50	55	63	70	73	78	81	84	84	87	87	87
Rain	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--

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