46.030°N, 91.443°W · station HYRthr · 134 years of record
49°F
COLDEST SEP 8 SINCE 2025
forecast low · Sep 8
7-Day Forecast
NWS NDFD forecast low temperature for Hayward.
This Day in History
Every year's low on each of the next 7 forecast dates at Hayward — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
Ranks
#50 / 62
coldest Sep 2 in 62 yrs of record
Coldest Sep 2 ever
31°F
set in 1893
Mildest Sep 2 ever
75°F
set in 1898
Forecast low 59°F — 50th coldest Sep 2 of 62 years · record 31°F (1893) · coldest since 2024.
Ranks
#49 / 59
coldest Sep 3 in 59 yrs of record
Coldest Sep 3 ever
33°F
set in 1911
Mildest Sep 3 ever
72°F
set in 1898
Forecast low 56°F — 49th coldest Sep 3 of 59 years · record 33°F (1911) · coldest since 2025.
Ranks
#54 / 56
coldest Sep 4 in 56 yrs of record
Coldest Sep 4 ever
28°F
set in 1918
Mildest Sep 4 ever
70°F
set in 1922
Forecast low 63°F — 54th coldest Sep 4 of 56 years · record 28°F (1918) · coldest since 2025.
Ranks
#48 / 57
coldest Sep 5 in 57 yrs of record
Coldest Sep 5 ever
28°F
set in 1909
Mildest Sep 5 ever
68°F
set in 2015
Forecast low 60°F — 48th coldest Sep 5 of 57 years · record 28°F (1909) · coldest since 2025.
Ranks
#49 / 60
coldest Sep 6 in 60 yrs of record
Coldest Sep 6 ever
32°F
set in 1935
Mildest Sep 6 ever
74°F
set in 2007
Forecast low 59°F — 49th coldest Sep 6 of 60 years · record 32°F (1935) · coldest since 2025.
Ranks
#44 / 62
coldest Sep 7 in 62 yrs of record
Coldest Sep 7 ever
33°F
set in 2025
Mildest Sep 7 ever
67°F
set in 2002
Forecast low 52°F — 44th coldest Sep 7 of 62 years · record 33°F (2025) · coldest since 2025.
Ranks
#35 / 58
coldest Sep 8 in 58 yrs of record
Coldest Sep 8 ever
32°F
set in 1998
Mildest Sep 8 ever
65°F
set in 2002
Forecast low 49°F — 35th coldest Sep 8 of 58 years · record 32°F (1998) · coldest since 2025.
The hottest and coldest ever recorded at Hayward in each calendar month, and for the whole 1893–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
56°FJan 24, 1942
-45°FJan 7, 1912
Feb
60°FFeb 29, 2000
-52°FFeb 16, 1936
Mar
81°FMar 26, 2007
-40°FMar 11, 1948
Apr
89°FApr 23, 1915
-6°FApr 16, 1904
May
98°FMay 28, 2006
11°FMay 4, 1907
Jun
106°FJun 1, 1934
24°FJun 9, 1937
Jul
108°FJul 12, 1936
32°FJul 24, 1913
Aug
100°FAug 8, 2005
29°FAug 26, 1915
Sep
96°FSep 2, 1898
15°FSep 28, 1893
Oct
86°FOct 2, 1914
1°FOct 25, 1933
Nov
73°FNov 1, 1933
-21°FNov 24, 1898
Dec
59°FDec 2, 1998
-42°FDec 31, 1946
All-time
108°FJul 12, 1936
-52°FFeb 16, 1936
2026 Records So Far
Records set or tied at Hayward so far this year — through Aug 26.
Record Highs in 2026
2 broke
plus 1 tied — daily record highs set this year
Record Lows in 2026
1 broke
plus 0 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
80°F
record high minimum — the night it never cooled · Jul 16, 2006
Coldest high ever
-20°F
record low maximum — the day it never warmed · Jan 5, 1912
Month
Warmest low
Coldest high
Jan
42°FJan 1, 1897
-20°FJan 5, 1912
Feb
47°FFeb 20, 2017
-13°FFeb 4, 1895
Mar
59°FMar 19, 2012
1°FMar 2, 1943
Apr
68°FApr 26, 1915
24°FApr 1, 1936
May
73°FMay 7, 1896
28°FMay 1, 1909
Jun
80°FJun 22, 2025
46°FJun 8, 1915
Jul
80°FJul 16, 2006
55°FJul 27, 2013
Aug
78°FAug 16, 1913
51°FAug 3, 1915
Sep
77°FSep 11, 2005
42°FSep 28, 1912
Oct
73°FOct 3, 2005
28°FOct 28, 1895
Nov
56°FNov 7, 2020
-3°FNov 30, 1896
Dec
42°FDec 24, 2023
-15°FDec 15, 1901
All-time
80°FJul 16, 2006
-20°FJan 5, 1912
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
137 days
record run, ended Mar 29 1896
So far in 2026
107 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Hayward's own 1991–2020 record. Today's normal low: 48°F · forecast is +1° vs normal.