134 



TABLES OF MEAN TEMPERATURES. 



Hour. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Year. 



Jackson. — Continued. 



Noon 



32°-4 



42°. 



51°. 7 



S6°.4 



74°-o 



78°.3 



8s°.o 



80°. 8 



78°. 6 



62°.6 



45°-9 



33°-6 



60°. I 



I 



32-9 



43-1 



52.9 



57-7 



74-9 



79-2 



85-4 



81.9 



80.0 



63-9 



46.6 



34-4 



61. 1 



2 



32.9 



43-4 



53 



.8 



59 



2 



75 



5 



78.9 



84.1 



82 



.6 



79-8 



64.2 



47 



4 



35-2 



61 



4 



3 



32.4 



42.9 



53 



.6 



58 



■9 



75 



2 



78.0 



83.2 



82 



6 



80.1 



63-7 



47 







35-2 



6i 



I 



4 



31.2 



42.0 



52 



9 



58 



3 



73 



b 



76.2 



.82.3 



80 



7 



79.0 



62.3 



46 







34-3 



5P 



9 



5 



29.0 



39-5 



51 



2 



56 



4 



72 



I 



75-4 



81. 1 



78 



7 



76.4 



58.8 



43 



I 



3^-9 



57 



8 



6 



27.0 



35-8 



47 



I 



53 



8 



68 



9 



728 



78.1 



75 







70.3 



52.9 



40 



4 



29.9 



54 



3 



7 



25.6 



34-1 



43 



6 



49 



7 



64 



4 



68.8 



73-1 



bq 



6 



64.3 



49-6 



39 



8 



28.8 



51 







8 



24.9 



33-2 



41 



7 



4b 



9 



60 



9 



64.1 



69.4 



66 



3 



61.3 



47-3 



38 



9 



27.1 



48 



5 



9 



23-7 



32.6 



40 



b 



45 



7 



57 



9 



62.2 



67.8 



bS 



I 



59-6 



46.0 



38 



I 



27.0 



47 



2 



10 





































46 



4 



II 





























45-8 



Mean 



























50-9 





Bi-HouRLY Means of Temperature. 







Washington City, Capitol Hill, D. C.^ Lat. 38° 53'. Long. 77° 01' W. of G. 1 



Alt. So feet. 



Lieut. J. M. Gilliss, U. S. N. Jan. 1S41, to June, 



1S42, inclusive. 





0.2^ 



32.37 



32.58 



42.48 



47-91 



55-20 



66.83 



68.78 



66.82 



62.70 



44.90 



41.80 



33-50 



49.66 



2.2 



32 



10 



31.22 



41 



2b 



46 



92 



53 



34 



66.04 



68.09 



65 



12 



61.90 



43-70 



40 



70 



33-16 



48 



6S 



4.2 



31 



71 



30-51 



40 



Ob 



4b 



12 



52 



42 



65.07 



66.78 



64 



17 



61.00 



42.30 



39 



40 



32.20 



47 



64 



6.2 



30 



74 



30.18 



39 



88 



46 



49 



55 



50 



68.26 



70.64 



65 



bq 



61.29 



41.70 



38 



80 



31.60 



48 



40 



8.2 



33 



13 



31-44 



42 



28 



49 



93 



59 



72 



73-63 



75-19 



71 



S9 



65-73 



45.00 



30 



50 



31.88 



51 



57 



10.2 



35 



3S 



36.72 



48 



06 



54 



02 



63 



23 



77-37 



78-38 



76 



oq 



71.02 



51.61 



44 



10 



36.00 



55 



qq 



°--a 



3^ 



2S 



40.04 



51 



39 



57 



68 



6b 



38 



79-33 



81.13 



78 



70 



74.66 



55-30 



48 



00 



39.20 



50 



17 



2.2 



40 



«3 



42.51 



53 



bi 



59 



98 



b8 



48 



81-93 



83-25 



80 



73 



76.50 



57.00 



40 



20 



41.30 



61 



27 



4.2 



40 



18 



42.28 



53 



28 



bo 



20 



68 



bq 



83-43 



84-76 



80 



oq 



76.30 



56.20 



48 



50 



40.60 



61 



21 



6.2 



3b 



bS 



38.22 



49 



97 



57 



22 



65 



93 



76.S9 



81-33 



75 



93 



72.30 



52-94 



47 



30 



37-95 



57 



72 



8.2 



35 



48 



35-38 



4b 



20 



52 



18 



59 



83 



72.29 



74-93 



71 



48 



68. 59 



48.40 



44 



20 



36.26 



5^ 



77 



10.2 



34.25 



33-86 



44-37 



49.12 



56.70 



68.70 



71-56 



68.00 



64.90 



46.60 



43-20 



34-70 



51 



33 



Mean 



35-to 



35-41 



46.0S 



52.31 



60.45 



73-32 



75-40 



72.02 



68.07 



48.80 



43-73 



35-70 



53-87 





Tri-hourly Means of- Temperature. 







Washington City, U. 



S. Naval Observatory. Lat. 38° 54'. 



Long. 77° 03' W. 



of G. 



Alt. no feet. Sup't U. S. N 



0. Astro, and Met. Obs. for 1S66-7-8-9. Jan. 



1862, to Dec. 1869, inclusive. 1 



Mdn't 



29-55 



31-75 



37-76 



47-71 



56.80 



65-72 



70-64 



69.16 



62.94 



50.35 



41.35 



32-57 



49.69 



3 



28 



45 



30 



45 



36 



31 



45-45 



54 



54 



63-77 



68 



96 



67-58 



61.34 



48.54 



39-76 



31-49 



48.05 



6 



27 



5*^ 



29 



5S 



35 



20 



44.62 



54 



41 



63.67 



68 



5S 



66.66 



60.35 



47-35 



38-82 



30.64 



47-28 



9 



29 



46 



32 



63 



39 



54 



51.66 



62 



37 



71.56 



76 



ss 



74.25 



69.23 



53-99- 



42.82 



32.67 



53-05 



Noon 



35 



89 



39 



02 



45 



35 



57.46 



68 



28 



77-40 



82 



68 



81.46 



75-37 



62.25 



51.00 



38.51 



59-56 



3 



37 



43 



41 



13 



47 



5*5 



59-50 



70 



51 



7S.8S 



84 



10 



8S-67 



77.11 



63.76 



51-94 



39-51 



61.26 



6 



33 



70 



37 



20 



44 



40 



56.26 



bb 



51 



75-35 



80 



64 



78-13 



70.08 



56.47 



46.21 



35.62 



56.71 



9 



31.29 



34-04 



40.07 



51-03 



60.24 



68.91 



73-56 



72-31 



65-14 



52.36 



43.16 



33-41 



52-13 



Mean 



31.67 



34-47 



40.77 



51-71 



61.71 



70.66 



75-69 



74-15 



67-70 



54-38 



44-38 



34-30 



53-47 



' Pub. Doc, 



2d Session, 28th Congress, vol. x. No. 172. Wa 



Aington, 1845. 





