Portola, California Weather Forecast

Local

Portola, CA, US

39.81046, -120.4691

Normals for September

	Temp ( °F °C )			Precip ( " mm )		Degree Days
	Min	Max	Avg	MTD	YTD	Heating	Cooling
1	40 4	83 28	61 16	0.01 undefined	15.53 undefined	4.3	0.5
2	40 4	83 28	61 16	0.01 undefined	15.53 undefined	4.4	0.5
3	39 4	82 28	61 16	0.02 undefined	15.54 undefined	4.6	0.5
4	39 4	82 28	61 16	0.03 undefined	15.55 undefined	4.7	0.4
5	39 4	82 28	61 16	0.04 undefined	15.56 undefined	4.9	0.4
6	39 4	82 28	60 16	0.05 undefined	15.57 undefined	5	0.4
7	39 4	82 28	60 16	0.05 undefined	15.57 undefined	5.2	0.4
8	39 4	81 27	60 16	0.06 undefined	15.58 undefined	5.4	0.4
9	38 4	81 27	60 15	0.07 undefined	15.59 undefined	5.6	0.3
10	38 4	81 27	60 15	0.08 undefined	15.6 undefined	5.8	0.3
11	38 3	81 27	59 15	0.09 undefined	15.61 undefined	6	0.3
12	38 3	80 27	59 15	0.1 undefined	15.62 undefined	6.2	0.2
13	38 3	80 27	59 15	0.11 undefined	15.63 undefined	6.4	0.2
14	38 3	80 26	59 15	0.13 undefined	15.65 undefined	6.6	0.2
15	37 3	79 26	58 15	0.14 undefined	15.66 undefined	6.8	0.2
16	37 3	79 26	58 15	0.16 undefined	15.68 undefined	7.1	0.1
17	37 3	79 26	58 14	0.17 undefined	15.69 undefined	7.3	0.1
18	37 3	78 26	58 14	0.19 undefined	15.71 undefined	7.6	0.1
19	37 3	78 26	57 14	0.2 undefined	15.72 undefined	7.8	0.1
20	36 2	78 25	57 14	0.22 undefined	15.74 undefined	8.1	0.1
21	36 2	77 25	57 14	0.24 undefined	15.76 undefined	8.4	0.1
22	36 2	77 25	56 14	0.27 undefined	15.79 undefined	8.7	0.1
23	36 2	77 25	56 13	0.29 undefined	15.81 undefined	9	0
24	35 2	76 25	56 13	0.31 undefined	15.83 undefined	9.3	0
25	35 2	76 24	55 13	0.33 undefined	15.85 undefined	9.6	0
26	35 2	75 24	55 13	0.35 undefined	15.87 undefined	9.9	0
27	35 2	75 24	55 13	0.37 undefined	15.89 undefined	10.3	0
28	34 1	74 24	54 12	0.4 undefined	15.92 undefined	10.6	0
29	34 1	74 23	54 12	0.42 undefined	15.94 undefined	10.9	0
30	34 1	74 23	54 12	0.44 undefined	15.96 undefined	11.3	0